Viessmann Vitotronic SPS Service Instructions Manual page 50

Troubleshooting
Overview of fault messages
TID Pp. No. Fault message
83 "Sensor fault T ECO C1 or
C2 outlet"
84 "Sensor fault P ECO C1 or
C2"
!
Please note
Faults may cause consequential damage.
Do not repeatedly acknowledge fault messages.
If the cause of the fault cannot be remedied,
please contact your heating contractor or
Viessmann Service.
Faults with risk of consequential damage
TID Pp. No. Fault message
43 "Winding protection com-
pressor 1"
44 "Winding protection com-
pressor 2"
45 "Winding protection com-
pressor 3"
48 "Oil pressure comp. 1"
50
(cont.)
Effect
Economiser switches off but
heat pump continues to run.
Economiser switches off but
heat pump continues to run.
Effect
Compressor 1 is switched off
Compressor 2 is switched off
Compressor 3 is switched off
Compressor 1 is switched off
Cause
Economiser outlet tempera-
ture sensor or connecting lead
faulty
Economiser pressure sensor
or connecting lead faulty
Cause
Winding protection device has
responded.
Motor winding too hot, short
circuit or too much power con-
sumed by compressor
Short circuit
■
Compressor is running out-
■
side application limits.
Compressor is mechanically
■
blocked or faulty
One phase has failed
■
Winding protection device has
responded.
Motor winding too hot, short
circuit or too much power con-
sumed by compressor
Short circuit
■
Compressor is running out-
■
side application limits.
Compressor is mechanically
■
blocked or faulty
One phase has failed
■
Winding protection device has
responded.
Motor winding too hot, short
circuit or too much power con-
sumed by compressor
Short circuit
■
Compressor is running out-
■
side application limits.
Compressor is mechanically
■
blocked or faulty
One phase has failed
■
Too little pressure differential
across the compressor oil
pump (no oil delivered)
Compressor has too little or
■
no oil.
Oil pump faulty
■
Oil is mixed with liquid re-
■
frigerant.