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2VV.
Creating innovative solutions for you and your business since 1995.
8. MAINTENANCE
9. TROUBLESHOOTING
We recommend checking the regulator and cleaning it once every six months, however the exact intervals should
be adapted to operating conditions. We recommend thoroughly cleaning the regulator once per year.
You can clean the regulator using a vacuum cleaner, brush, cloth and soap water (only from the outside; observe
processes and requirements for handling electrical devices).
Do not use sharp objects, aggressive chemicals, solvents, abrasive cleaners, pressurized water jets, compressed
air, or steam when cleaning the regulator.
Description
Device
behavior
Likely problem
Solution
44 - Fan
error
Device
not working
Overheated fan or thermal
contact error of the intake
fan
Determine the cause of the motor overheating
(defective bearing, mechanical defect, short,
etc.) or replace the motor. Check the connec
-
tion of thermo contacts from the motor to the
regulator.
45 - Required main
-
tenance/fouled filter
Device
working
Filter or set replacement
time has been reached
Replace filter. After replacing filter, don't forget
to RESET in MENU 1616 - FILTER TIMER
46 - Heater
failure
Device
not working
Heater defect
Check the heater and the status of the safe
-
ty thermostat. Is proper cooling of the heater
secured?
Check motor operation.
47 - Exterior tem
-
perature sensor
failure (45,46)
Device
not working
Defective temperature sen
-
sor on connectors 45,46
Check proper connection of sensor to electron
-
ics, if applicable test sensor functionality using
resistance measurement (resistance value at
+20°C is approx. 10k
W
)
48 - Exhaust air
temperature sensor
failure (49,50)
Device
not working
Defective temperature sen
-
sor on connectors 49.50
Check proper connection of sensor to electron
-
ics, if applicable test sensor functionality using
resistance measurement (resistance value at
+20°C is approx. 10k
W
)
49 - Intake air
temperature sensor
failure (51,52)
Device
not working
Defective temperature sen
-
sor on connectors 51.52
Check proper connection of sensor to electron
-
ics, if applicable test sensor functionality using
resistance measurement (resistance value at
+20°C is approx. 10k
W
)
60 - Recirculated
heat exchanger
water sensor failure
(53,54)
Device
not working
Defective temperature sen
-
sor on connectors 53.54
Check proper connection of sensor to electron
-
ics, if applicable test sensor functionality using
resistance measurement (resistance value at
+20°C is approx. 10k
W
)
61 - Spatial tem
-
perature sensor
failure (55,56)
Device
not working
Defective temperature sen
-
sor on connectors 55.56
Check proper connection of sensor to electron
-
ics, if applicable test sensor functionality using
resistance measurement (resistance value at
+20°C is approx. 10k
W
)
