95
qW 2
/
3
/
4
wI
wW
wP
wQ
wE
qO
wT
8
1
Wiring chamber
2
Safety high pressure switch
High pressure 1 (Stage 1)
3
Only type WW 302.AS125,
WW 302.AS155, WW 302.AS200,
WW 302.AS250, WW 302.AS300:
Safety high pressure switch
High pressure 2 (Stage 2)
4
Pressure transmitter, high pressure
6
Suction gas temperature sensor
8
Pressure transmitter, low pressure
qW
Electronic expansion valve EEV
qT
Only type WW 302.AS125,
WW 302.AS155, WW 302.AS200,
WW 302.AS250, WW 302.AS300:
Compressor 2 (Stage 2)
qU
Compressor 1 (Stage 1)
qI
Sight glass, oil level Compressor 1
and 2
qO
Return temperature sensor, secon-
dary circuit
Only type WW 302.AS125,
WW 302.AS155, WW 302.AS200,
WW 302.AS250, WW 302.AS300:
2 return temperature sensors, sec-
ondary circuit
wP
Filter dryer
wQ
Only type WW 302.AS125,
WW 302.AS155, WW 302.AS200,
WW 302.AS250, WW 302.AS300:
Second parallel filter dryer
wW
Condenser
wE
Evaporator
wR
Return temperature sensor (heat
pump brine outlet), primary circuit
wT
Flow temperature sensor, secon-
dary circuit
wZ
Flow temperature sensor (heat
pump brine inlet), primary circuit
wU
Flow switch
wI
Frost stat
wO
Frost stat temperature sensor
eP
Sight glass, if installed
Draining the heat pump on the primary/secondary side
Drain the heat pump at the on-site drain
valve (primary/secondary side).
Troubleshooting
Repairs
(cont.)
5848 246 GB
Service