Log in

Service Assistant

|

Model
Text search
Error code
Sort by
« »
Date
06.11.2020
Code
Models
Name
Service Assistant Search instructions:
Description
Information can be searched:
- By Machine type or
- By free Text search or
- By Error codes (Alarms)
Text search searches for matching words.
=> Use the keyword (s) as short and precise as possible! Try different word formats.
Consequenses
After a successful search, hits and results matching the search will appear on the tabs !!
The results of the tabs can be scrolled with the scroll buttons at the top.
Date
01.09.2020
Code
01
Models
L90, L5, L7, L7E, L7XE, L4BHS, L5BHS, L5BHSY, L6BHS, UMT, L300, L400GS, LT9, LT9M, LT9Y, UMT6BHSK
Name
Oil pressure
Description
Oil pressure alarm
Reason
Low oil pressure while the diesel engine is running
Consequenses
- Engine shut down.
- No restarting.
Date
01.09.2020
Code
02
Models
L90, L5, L7, L7E, L7XE, L4BHS, L5BHS, L5BHSY, L6BHS, UMT, UMT6H, L6H, L300, L400GS, LT9, LT9M, LT9Y, UMT6BHSK
Name
Zone1 evp. Fan
Description
Zone 1 evaporator fan alarm
Reason
Zone 1 evaporator fan thermal relay or fuse has cut off power from the fans
Consequenses
- Zone 1 cooling and heating modes prevented
- Evaporator fan does not work, fan does not rotate
- If problem still exists, please contact to Lumikko service
Date
01.09.2020
Code
03
Models
L90, L5, L7, L7E, L7XE, L5BHS, L5BHSY, L6BHS, UMT, UMT6H, L6H, L300, L400GS, LT9, LT9M, LT9Y, UMT6BHSK
Name
Zone2 evp. Fan
Description
Zone 2 evaporator fan alarm
Reason
Zone 2 evaporator fan temperature relay has cut off power from fans
Consequenses
- Zone 2 cooling and heating modes prevented
- Evaporator fan does not work, fan does not rotate
- Reset thermal relay F21 from the multitemperature unit
- If problem exists, please contact to Lumikko service
Date
01.09.2020
Code
04
Models
L90, L300
Name
Zone3 evp. Fan
Description
Zone 3 evaporator fan alarm
Reason
Zone 3 evaporator fan temperature relay has cut off power from fans
Consequenses
- Zone 3 cooling and heating modes prevented
- Evaporator fan does not work, fan does not rotate
- If problem exists, please contact to Lumikko service
Date
01.09.2020
Code
04
Models
L400GS
Name
Coolant Level
Description
Diesel engine coolant level too low alarm
Reason
Coolant water sensor detects too low level of diesel engine coolant water.
Consequenses
- Engine shut down.
- Diesel engine overheats.
- No restarting.
Date
01.09.2020
Code
05
Models
L90, L5, L7, L7E, L7XE, L4BHS, L5BHS, L5BHSY, L6BHS, UMT, UMT6H, L6H, L300, L400GS, LT9, LT9M, LT9Y, UMT6BHSK
Name
HP Alarm
Description
High pressure alarm
Reason
- Too high pressure in the refrigerant circle.
- Before high pressure alarm four high pressure warnings has occured in 30 minutes.
Consequenses
- Cooling mode is prevented / not cooling.
- If problem exists, please contact to Lumikko service.
Date
01.09.2020
Code
06
Models
L90, L5, L7, L7E, L7E, L7XE, L4BHS, L5BHS, L5BHSY, L6BHS, UMT, UMT6H, L6H, L300, L400GS, LT9, LT9M, LT9Y, UMT6BHSK
Name
Zone1 overheat
Description
Zone 1 overheat protection switch alarm
Reason
- Zone 1 eveporator coil temperature too high
- Zone 1 overheats
Consequenses
- Osaston 1. lämmitys- ja/tai sulatuspyyntö nollautuu.
- Osaston 1. lämmitys- ja/tai sulatuspyynti ei ole mahdollista.
- Osastoa 1. voidaan käyttää ylilämpösuojakytkimen palautumisen jälkeen normaalisti.
- Hälytyksen syy on paikallistettava mahdollisimman pian huoltopisteen toimesta.

Actions:
- Zone 1 is set to standby mode.
- Zone 1 heating and/or defrost mode is prevented.
- Zone 1 can be used normally when the overheat protection switch resets.
- Cause of the alarm must be solved as soon as possible at Lumikko service.
Date
01.09.2020
Code
07
Models
L90, L5, L7, L7E, L7XE, L5BHS, L5BHSY, L6BHS, UMT, UMT6H, L6H, L300, L400GS, LT9, LT9M, LT9Y, UMT6BHSK
Name
Zone 2 overheat
Description
Zone 2 evaporator coil alarm, temperature too high
Reason
- Zone 2 eveporator coil temperature too high
- Osasto 2. overheats
Consequenses
- Zone 2 is set to standby mode.
- Zone 2 heating and/or defrost modes is prevented.
- Zone 2 can be used normally when the overheat protection switch resets.
- Cause of the alarm must be solved as soon as possible in Lumikko service.
Date
01.09.2020
Code
08
Models
L90, L300
Name
Zone3 overheat
Description
Zone 3 overheat protection switch alarm
Reason
- Zone 3 eveporator coil temperature too high
- Zone 3. overheats
Consequenses
- Zone 3 is set to standby mode.
- Zone 3 heating and/or defrost mode is prevented.
- Zone 3 can be used normally when the overheat protection switch resets.
- Cause of the alarm must be solved as soon as possible in Lumikko service.
Date
01.09.2020
Code
08
Models
L5, L7, L7E, L7XE, L5BHS, L5BHSY, L6BHS, UMT, L6H, L400GS, LT9, LT9Y, UMT6BHSK
Name
Compressor Overheat
Description
Compressor cylinder head temperature alarm.
Reason
- Compressor cylinder head temperature is too high.
- Compressor overheats
Consequenses
- Compressor shuts down and restarts when temperature has dropped to nominal level.
- The unit can be used normally when the overheat protection switch resets.
- Cause of the alarm must be solved as soon as possible in Lumikko service.
Date
01.09.2020
Code
09
Models
L5
Name
Condenser Fan
Description
Condenser fan fuse alarm
Reason
Condenser fan fuse has cut off power.
Consequenses
- Condensing capability inefficient. May cause high pressure alarm.
Condenser fan not working, fan not rotates
- If problem exists, please contact Lumikko service.
Date
01.09.2020
Code
09
Models
L4BHS, L5BHS, L5BHSY, UMT6H, L6H
Name
Evaporator Fans
Description
Zone 1 evaporator fan alarm
Reason
Zone 1 evaporator fan fuse has cut off power from the fans
Consequenses
- Zone 1 cooling and heating modes prevented
- Zone 1 evaporator fan not working, fan does not rotate
- If problem still exists, please contact to Lumikko service
Date
01.09.2020
Code
10
Models
L5, L4BHS, L5BHS, L5BHSY, L6BHS, UMT, UMT6H, L6H, UMT6BHSK
Name
Gener. / comp. fault
Description
Generator safety switch or Compressor thermal relay cut off alarm
Reason
Generator safety switch or compressor thermal relay has cut off power because of too high temperature.
Consequenses
- System will shut down.
- Generator not working, compressor not working.
- Restart the system.
- If problem exists, please contact Lumikko service.
Date
01.09.2020
Code
10
Models
L300, L90, L7, L7E, L7XE
Name
Electric motor
Description
Electric motor thermal relay cut off alarm
Reason
Electric motor thermal relay has cut off power because too high motor current.
Consequenses
- System will shut down.
- Electric motor does not work.
- Restart the system.
- If problem exists, please contact Lumikko service.
Date
01.09.2020
Code
10
Models
L400GS, LT9, LT9M, LT9Y
Name
Gener. / comp. Fault
Description
Generator safety switch or Compressor thermal relay cut off alarm
Reason
Generator safety switch or compressor thermal relay has cut off power because of too high temperature.
Consequenses
- System will shut down.
- Generator not working, compressor not working.
- Restart the system.
- If problem exists, please contact Lumikko service.
Date
01.09.2020
Code
11
Models
L90, L5, L7, L7E, L7XE, L4BHS, L5BHS, L5BHSY, L6BHS, UMT, L300, L400GS, LT9, LT9M, LT9Y, UMT6BHSK
Name
Engine overheat
Description
Diesel engine overheat alarm
Reason
Diesel engine coolant temperature has passed over 115C. Engine will shut down. Restart possible after cooling down.
Consequenses
- System will shutdown.
- Diesel motor overheats, engine overheats
- No restarting.
- ATTENTION! Let the diesel engine to cool down before any actions.
- Check radiator fan
- Check coolant level.
- If problems exists, please contact Lumikko service.
Date
01.09.2020
Code
11
Models
UMT6H, L6H
Name
Oil temp overheat
Description
Hydraulic oil overheat alarm
Reason
- Hydraulic oil temperature has passed over 80C. Cooling and heating prevented.
- Resets automatically if temperature drops below 70C
-System will shut down in 85C.
Consequenses
- System will shutdown 85C.
- No restarting.
- If problems exists, please contact Lumikko service.
Date
01.09.2020
Code
12
Models
L90, L5, L7, L7E, L7XE, L4BHS, L5BHS, L5BHSY, L6BHS, UMT, L300, L400GS, LT9, LT9M, LT9Y, UMT6BHSK
Name
AC Supply, AC-supply
Description
Electric supply fault alarm
Reason
System does not detect power supply or it is missing in mains use or in diesel use electric motor/generator does not generate electricity. System is not operational.
Consequenses
- In diesel use: System will shut down.
- In mains use: System will shut down. ATTENTION! When electricity is available again, system starts up.
- Unit does not work, does not cool, does not heat
- If parameter electricity auto start is set ON (Default is OFF), diesel engine will start up after one minute, after that external electricity is checked in 15 minute interval. Diesel engine is shut down after interval check detects that external electricity is available.
- If problem exists, please contact Lumikko service.
Date
04.05.2021
Code
12
Models
UMT6H, L6H
Name
AC Supply, AC-supply
Description
Electric supply fault alarm
Reason
Occurs in mains operation if the temperature control does not detect the power supply.
Consequenses
- System will shut down. ATTENTION! When electricity is available again, system starts up.
- Unit does not work, does not cool, does not heat
- If problem exists, please contact Lumikko service.
Date
01.09.2020
Code
13
Models
L5, L7, L7E, L7XE, L5BHS, L5BHSY, L6BHS, UMT, UMT6H, L6H, L400GS, LT9, LT9M, LT9Y, UMT6BHSK
Name
Zone2 Defrost Fault
Description
Zone 2 defrost malfunction alarm
Reason
Zone 2 evaporator maximum defrosting time has been exceeded. Defrost ending temperature is not reached or overheat protection switch has detected overheat during defrosting cycle.
Consequenses
- Defrost not working, not defrosting.
- System returns to cooling mode.
- Evaporator can still be frozen.
- Alarm is displayed.
- Alarm is cleared automatically after successful defrosting cycle.
- If problem exists, please contact Lumikko service.
Date
01.09.2020
Code
14
Models
L90, L5, L7, L7E, L7XE, L4BHS, L5BHS, L5BHSY, L6BHS, UMT, UMT6H, L6H, L300, L400GS, LT9, LT9M, LT9Y, UMT6BHSK
Name
CAN-bus error
Description
CAN bus communication error alarm
Reason
CAN-bus communication/connection failure between main control unit (MCU) and user panel (UP).
Consequenses
- System stays operational according to last settings.
- System can be shut down by switching the service switch from the electrical center to 0-position.
- Restart the system.
- If problem exists, please contact Lumikko service.
Date
01.09.2020
Code
15
Models
L90, L5, L7, L7E, L7XE, L4BHS, L5BHS, L5BHSY, L6BHS, UMT, UMT6H, L6H, L300, L400GS, LT9, LT9M, LT9Y, UMT6BHSK
Name
Zone 1 sensor
Description
Zone 1 return air temperature sensor failure alarm
Reason
Zone 1 return air temperature sensor value is out of the measuring range. System will determ the return air temperature by using the defrost temperature sensor value.
Consequenses
- Cooling does not work, heating does not work
- System stays operational.
- Zone 1 temperature value is not accurate.
- If return air and defrost sensors are both in alarm state then system will set zone function to off.
- Cause of the alarm must be solved as soon as possible at Lumikko service.
Date
01.09.2020
Code
16
Models
L90, L5, L7, L7E, L7XE, L4BHS, L5BHS, L5BHSY, L6BHS, UMT, L6H, L300, L400GS, LT9, LT9M, LT9Y, UMT6BHSK
Name
Engine start times
Description
Diesel engine alarm, maximum starting times exceeded.
Reason
Main control unit (MCU) has tried to start the diesel engine five times unsuccessfully.
Consequenses
- System shuts down.
- Diesel motor not starting, engine not starting.
- No restarting.
- If problem exists, please contact Lumikko service.
Date
01.09.2020
Code
17
Models
L90, L5, L7, L7E, L7XE, L5BHS, L5BHSY, L6BHS, UMT, UMT6H, L6H, L300, L400GS, LT9, LT9M, LT9Y, UMT6BHSK
Name
Zone 2 sensor
Description
Zone 2 return air temperature sensor failure alarm
Reason
Zone 2 return air temperature sensor value is out of the measuring range. System will determ the return air temperature by using the defrost temperature sensor value.
Consequenses
- Cooling does not work, heating not working
- System stays operational.
- Zone 2 temperature valua is not accurate.
- If return air and defrost sensors are bot in alarm state then system will set zone function to off.
Date
01.09.2020
Code
18
Models
L7, L7E, L7XE
Name
Condenser fan overheat alarm
Description
Condenser fan overheat alarm
Reason
Condenser fan internal overheat protection switch has cut off power.
Consequenses
- Condenser fan does not work, condenser fan not working
- Condenser fan shuts down.
- Condesing capability inefficient.
- Fan continues to operate after cooling down.
- Please contact Lumikko service
Date
01.09.2020
Code
19
Models
L90, L5, L7, L7E, L7XE, L4BHS, L5BHS, L5BHSY, L6BHS, UMT, UMT6H, L6H, L300, L400GS, LT9, LT9M, LT9Y, UMT6BHSK
Name
Zone1 defrost sensor
Description
Zone 1 defrost temperature sensor failure alarm
Reason
Zone 1 defrost temperature sensor value is out of the measuring range.
Consequenses
- Defrost does not not work, defrost not working
- System stays operational.
- Zone 1 will defrost for 7 minutes if necessary.
- Please contact Lumikko service.
Date
01.09.2020
Code
20
Models
L90, L5, L7, L7E, L7XE, L5BHS, L5BHSY, L6BHS, UMT, UMT6H, L6H, L300, L400GS, LT9, LT9M, LT9Y, UMT6BHSK
Name
Zone2 defrost sensor
Description
Zone 2 defrost temperature sensor failure alarm
Reason
Zone 2 defrost temperature sensor value is out of the measuring range.
Consequenses
- Defrost does not not work, defrost not working
- System stays operational.
- Zone 2 will defrost for 7 minutes if necessary.
- Please contact Lumikko service.
Date
01.09.2020
Code
21
Models
L5, L7, L7E, L7XE, L4BHS, L5BHS, L5BHSY, L6BHS, UMT, UMT6H, L6H, L400GS, LT9, LT9M, LT9Y, UMT6BHSK
Name
HP transmitter
Description
High pressure transmitter alarm, (PS3) failure
Reason
High pressure transmitter value is out of the measuring range.
Consequenses
- Pressure transmitter problem, pressure transmitter does not work.
- System stays operational.
- Condenser fans will always operate at 100% power when the compressor is running.
- LP warnings and alarm may occur when operating in low ambient temperature.
- Cause of the alarm must be solved as soon as possible at Lumikko service.
Date
01.09.2020
Code
22
Models
L90, L5, L7, L7E, L7XE, L4BHS, L5BHS, L5BHSY, L6BHS, UMT, L300, L400GS, LT9, LT9M, LT9Y, UMT6BHSK
Name
Diesel temp sensor
Description
Diesel engine coolant temperature sensor alarm, failure.
Reason
- Diesel engine coolant temperature sensor value is out of the measuring range.
- Diesel motor overheats, engine overheats
Consequenses
- System stays operational.
- Radiator fan operates continuously when diesel engine is running.
- Diesel engine is protected from overheating by a separate mechanical overheat switch.
- Main controller unit (MCU) uses preset parameter for glowing.
- Connection of the diesel engine temperature sensor may be weak. Can cause the unit to assume e.g. that the engine temperature is too cold. The engine is only idling and not raising rpm.
- Please contact Lumikko service.
Date
01.09.2020
Code
22
Models
UMT6H, L6H
Name
Oil temp sensor
Description
Hydraulic oil temperature sensor alarm, failure
Reason
Hydraulic oil temperature sensor value is out of the measuring range.
Consequenses
- System shuts down / not working.
- No restarting.
- Please contact Lumikko service.
Date
01.09.2020
Code
23
Models
L400GS
Name
Generator temp sensor
Description
Generator temperature sensor alarm, failure
Reason
Generator temperature sensor value is out of the measuring range.
Consequenses
- System shuts down.
- No restarting.
- Please contact Lumikko service.
Date
01.09.2020
Code
24
Models
L90, L5, L4BHS, L5BHS, L5BHSY, L6BHS, UMT, UMT6H, L6H, L400GS, LT9, LT9M, LT9Y, UMT6BHSK
Name
Supply air sensor
Description
Evaporator supply air temperature sensor alarm, failure.
Reason
Evaporator supply air temperature sensor valua is out of measuring range. System stays operational.
Consequenses
- Systems will continue to operate if the temperature limit has not been reached.
- Please contact Lumikko service.
Date
01.09.2020
Code
25
Models
L5, L7, L7E, L7XE, L4BHS, L5BHS, L5BHSY, L6BHS, UMT, UMT6H, L6H, L400GS, LT9, LT9M, LT9Y, UMT6BHSK
Name
Defrost failure alarm
Description
Defrost failure alarm
Reason
Zone 1 defrost failure. Maximum defrost time has been reached.
Consequenses
- Defrosting does not work, evaporator freezes
- System returns to cooling mode.
- The evaporator may be frozen.
- The alarm is displayed
- The alarm is automatically reset after successful defrosting.
- Please contact Lumikko service.
Date
01.09.2020
Code
26
Models
L90, L5, L7, L7E, L7XE, L4BHS, L5BHS, L5BHSY, L6BHS, UMT, L300, L400GS, LT9, LT9M, LT9Y, UMT6BHSK
Name
Running Signal
Description
Diesel engine running signal alarm
Reason
No signal received from inductive rpm sensor.
Consequenses
- Diesel engine does not run, engine does not start
- System stays operational.
- Diesel engine is controlled by the oil pressure sensor.
- Please contact Lumikko service.
Date
01.09.2020
Code
26
Models
UMT6H, L6H
Name
Running Signal
Description
Hydraulic motor running signal alarm
Reason
No signal received from inductive rpm sensor.
Consequenses
- System shuts down.
- Please contact Lumikko service.
Date
01.09.2020
Code
27
Models
L400GS
Name
Radiator fan
Description
Radiator fan alarm
Reason
Radiator fan thermal relay has cut off power.
Consequenses
- Diesel motor overheats, engine overheats
- System shuts down in diesel use.
- System stays operational in mains use.
- Reset thermal relay F17.
- If problem exists, please contact Lumikko service.
Date
01.09.2020
Code
27
Models
L5
Name
Condenser fan
Description
Condenser fan alarm
Reason
Condenser fan fuse has cut power.
Consequenses
- Condenser fan does not work, fan not working
- System stays operational.
- Condensing capability inefficient. May cause high pressure alarm.
- If problem exists, please contact Lumikko service.
Date
01.09.2020
Code
27
Models
L90, L7, L7E, L7XE
Name
Condenser fan
Description
Condenser fan thermal relay cut off alarm
Reason
Condenser fan temperature relay has cut off power from fan because of too high temperature.
Consequenses
- condenser fan does not work, fan not working.
- System stays operational.
- Condensing capabilities inefficient. May cause high pressure alarm.
- If problem exists, please contact Lumikko service.
Date
01.09.2020
Code
27
Models
L4BHS, L5BHS, L5BHSY, L6BHS, UMT, UMT6H, L6H, UMT6BHSK
Name
Condenser fan
Description
Condenser fan fuse alarm
Reason
Condenser fan fuse has cut power.
Consequenses
- Condenser fan does not work, fan not working.
- System stays operational.
- Condensing capability inefficient. May cause high pressure alarm.
- If problem exists, please contact Lumikko service.
Date
01.09.2020
Code
28
Models
L90, L5, L7, L7E, L7XE, L4BHS, L5BHS, L5BHSY, L6BHS, UMT, L6H, L300, L400GS, LT9, LT9M, LT9Y, UMT6BHSK
Name
Low battery volts
Description
Low battery voltage alarm
Reason
Low battery voltage when starting up or running.
Consequenses
- Diesel engine does not start, engine not starting
- System stays operational.
- Start/stop function disabled for 60 minutes.
- Check alternator belt.
- Please contact Lumikko service.
Date
01.09.2020
Code
29
Models
L90, L5, L7, L7E, L7XE, L4BHS, L5BHS, L5BHSY, L6BHS, UMT, L300, L400GS, LT9, LT9M, LT9Y, UMT6BHSK
Name
Engine overheat
Description
Diesel engine mechanical overheat alarm
Reason
Diesel engine mechanical overheat switch has detected too high coolant temperature
Consequenses
- Diesel motor overheats, engine overheats
- Diesel engine does not start, not starting
- System shuts down.
- No restarting.
- ATTENTION! Let the diesel engine to cool down before any actions.
- Check water pump's belt condition and tension.
- Restarting is possible when the coolant temperature has dropped.
- If problems exists, please contact Lumikko service.
Date
01.09.2020
Code
30
Models
L90, L5, L7, L7E, L7XE, L4BHS, L5BHS, L5BHSY, L6BHS, UMT, UMT6H, L6H, L300, L400GS, LT9, LT9M, LT9Y, UMT6BHSK
Name
LP alarm
Description
Low pressure alarm
Reason
- Too low pressure in the refrigerant circle.
- Before low pressure alarm four low pressure warnings has occured in 30 minutes.
- Refrigerant leak, shaft seal leak.
Consequenses
- Unit does not cool, not cooling
- Compressor shuts down.
- Possible leakage in the refrigeration circuit.
- Check the airflow of the evaporator coil if it's blocked/frozen.
- Shut down and restart the system.
- Please contact Lumikko service.
Date
01.09.2020
Code
31
Models
L4BHS, L5BHS, L5BHSY, L6BHS, UMT, L6H, L400GS, UMT6BHSK
Name
Generator overheat
Description
High pressure warning alarm
Reason

- High pressure sensor has detected too high pressure in the refrigeration circuit.
Consequenses
- The generator does not work, denerator does not generate electricity.
- System shuts down.
- No restarting.
- If problem exists, please contact Lumikko service.
Date
01.09.2020
Code
32
Models
L5, L7, L7E, L7XE, L4BHS, L5BHS, L5BHSY, L6BHS, UMT, UMT6H, L6H, L400GS, LT9, LT9M, LT9Y, UMT6BHSK
Name
HP warning
Description
High pressure warning alarm
Reason
- High pressure sensor has detected too high pressure in the refrigeration circuit.
- When four high pressure warnings has occurred within 30 minutes, the system will shut down and a high pressure alarm is displayed.
Consequenses
- Lämmönsäätölaite ei jäähdytä, ei tee kylmää.
- Compressor shuts down.
- High pressure warning will automatically reset when the pressure drops.
- If problem exists, please contact Lumikko service.
Date
01.09.2020
Code
33
Models
L5, L7, L7E, L7XE, L4BHS, L5BHS, L5BHSY, L6BHS, UMT, UMT6H, L6H, L400GS, LT9, LT9M, LT9Y, UMT6BHSK
Name
LP warning
Description
Low pressure warning alarm
Reason
- Low pressure transmitter has detected too low pressure in the refrigeration circuit.
- When four low pressure warnings has occurred within 30 minutes, the system will shut down and a low pressure alarm is displayed.
Consequenses
- Unit does not cool, not cooling
- Compressor shuts down.
- Possible leakage in the refrigeration circuit.
- Low pressure warning will automatically reset when the pressure rises.
- Check the airflow of the evaporator coil if it's blocked.
- Defrost manually if necessary.
- Shut down and restart the system.
- If problem exists, please contact Lumikko service.
Date
01.09.2020
Code
34
Models
L7XE, L4BHS, L5BHS, L5BHSY, L6BHS, UMT, UMT6H, L6H, UMT6BHSK
Name
Heating resistors
Description
Heating resistor fuse alarm
Reason
Heating resistors fuse has cut power.
Consequenses
- Heating does not work, not heating
- System stays operational.
- Heating and defrosting capability inefficient. May cause defrost failure alarm
- If problem exists, please contact Lumikko service.
Date
01.09.2020
Code
35
Models
L4BHS, L5BHS, L5BHSY, L6BHS, UMT, UMT6H, L6H, UMT6BHSK
Name
Suction line sensor
Description
Suction line temperature sensor alarm, failure
Reason
Zone 1 suction line temperature sensor value is out of the measuring range. System will use fixed values for EEV control.
Consequenses
- System stays operational.
- Superheat value is not accurate.
- If SAT and RAT sensors are both in alarm state then system will set zone function to off.
- Cause of the alarm must be solved as soon as possible at Lumikko service.