Webasto BlueCool Classic User Manual

Trouble Shooting
19
6 Trouble Shooting
6.1 Failure codes and trouble shooting
Failure
code
Description Possible cause Solution
AAA Low Voltage Low voltage cut-out. Power supply was
over 5 sec lower than controller setting.
Probably caused by long length power
supply cable or overload.
Check setting, default 195 V.
Don't set below 195 V to avoid damages
to the compressor or to expire warranty.
Improve power supply.
Voltage too low for initialization, power
supply will be far below 195 V.
Check power supply.
A01 Low pressure cut-out
compressor 1
(Classic > 20.000 BTU)
15 to 35 PSI /
1 to 2.4 bar
Defective pressure sensor or open/short
circuit.
Check wiring or replace pressure sensor
on Schrader valve.
COOLING MODE:
- Insufficient evaporator water flow
(Premium) or air flow (Classic).
- Air lock in water circuit (Premium) or
broken circulation pump.
Check water or air flow.
ΔT evaporator in/out minimum 4K.
Bleed Premium water system; check
pump operation.
HEATING MODE:
- Insufficient seawater flow or seawater
to cold.
- Blocked sea-water strainer or not
primed.
Check discharge water volume.
V= 8 l/min
(or > 30,000 BTU V= 18 l/min).
ΔT in/out minimum 4K.
When T seawater < 4 °C: preheating
necessary.
Clean strainer and bleed seawater circuit.
Lack of refrigerant. Refrigerant leak check.
A02 High pressure cut-out
compressor 1
350 to 250 PSI /
24 to 17.24 bar
Defective pressure sensor or open/short
circuit.
Check sensor and wiring. Replace sensor
on Schrader if necessary.
COOLING MODE:
- Insufficient seawater cooling or
defective circulation pump.
- Blocked seawater strainer or not
primed.
Check discharge water volume.
V= 8 l/min
(or > 30,000 BTU V= 18 l/min).
Clean strainer and bleed sea-water circuit.
HEATING MODE:
- Insufficient evaporator water flow
(Premium) or air flow (Classic).
- Air lock in chilled water circuit
(Premium) or broken circulation pump.
Check water or air-flow.
ΔT evaporator in/out minimum 4K.
Bleed chilled water system or check pomp
operation.
A03 Low pressure cut-out
compressor 2
(Premium only)
See A01 See A01
A04 High pressure cut-out
compressor 2
(Premium only)
See A02 See A02
A05 Low pressure cut-out
compressor 3
(Premium only)
See A01 See A01
A06 High pressure cut-out
compressor 3
(Premium only)
See A02 See A02

Webasto BlueCool Classic Specifications

General

Brand	Webasto
Model	BlueCool Classic
Category	Air Conditioner
Language	English