Webasto BlueCool Classic Series
TROUBLESHOOTING
31
n/a
No or insufficient
cooling or heating
performance.
Bad air flow or water flow,
filthy or blocked circulation.
Ensure air or water flow
(see A01 and/or A02).
Lack of refrigerant.
Lack of refrigerant mostly
recognized by a low static
pressure before start-up and non-
fluctuating LP associated with a
low HP pressure reading.
Check for refrigerant leaks, repair
if necessary and charge required
amount of refrigerant.
Oil lock.
Operate the unit in heat cycle.
Intervention by a refrigerant
specialist might be necessary.
Technical Memo available.
Blocked refrigerant circuit.
(Drier, capillary or expansion
valve).
To be determined by a refrigerant
specialist.
Technical Memo available.
Bad compressor.
To be determined by a refrigerant
specialist.
n/a
Pumps running
continuously.
When additional relays are used
to operate pumps a small leaking
current from the printboard may
operate the relay continuously.
Remove R56 + C24 and/or R57 +
C27 from the printboard.
n/a
Inaccurate
temperature read-out
of room / ambient
temperature or
evaporator
temperature.
Temperature sensor not installed
on the right position,
interference by environment or
read-out deviation.
Check for interference by direct
sunlight or heat radiation from
components near to the sensor.
Calibrate sensor.
Replace defective sensor.
Table 5
Failure
code
Description
Possible cause
Solution
