Viessmann PLC VITOCAL 350-HT PRO, Инструкция по эксплуатации для пользователя системы

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ID Fault message Effects Possible cause
17! "EEV requires min. 1 stage
more" The system switches off The electronic expansion valve requires
one more compressor in order to operate
optimally
18 "Sensor fault, refrig." The system switches off Refrigerant sensor is faulty
19 "Refrig. leak, alarm" The system switches off The refrigerant sensor has measured an
excessively high concentration of refrig-
erant in the air
20 "All soft starters faulty" The system switches off All soft starters have a fault status
21 "Ctrllr IHE" The system switches off Overall superheating has not been
reached or hot gas too warm
22 "Pressure switch, primary cir-
cuit" The system switches off The pressure in the primary circuit is too
low
28 "All high press. switches
trig." The system switches off All safety high pressure switches have a
fault status.
Note
To reset the safety high pressure
switches, see the heat pump installation
and service instructions.
29 "All winding protectors faulty" The system switches off All winding protectors have a fault status
30 "All oil press. too low" The system switches off All oil pressure differentials are too low
Other fault messages
Note
You may acknowledge the following fault messages at
any time. These fault messages do
not prevent opera-
tion of the heat pump. If a fault remains active or
occurs several times, please contact your heating con-
tractor or Viessmann Service.
ID Fault message Effects Possible cause
41 "Replace PLC battery" The specified set values may be
lost if there is a power failure The SPS (PLC) battery is almost
or completely drained and must
be replaced
42 "Sensor fault, outside temp" The outside temperature cannot
be measured Outside temperature sensor faul-
ty
43 "Sensor fault, outlet temp,
evaporator" The outlet temperature of the
evaporator cannot be measured Faulty temperature sensor at
evaporator outlet
44 "Sensor fault, inlet temp, con-
denser" The inlet temperature of the
condenser cannot be measured Faulty temperature sensor at
condenser inlet
45 "Sensor fault, inlet temp,
evaporator" The inlet temperature of the
evaporator cannot be measured Faulty temperature sensor at
evaporator inlet
46 "Man. switching act." Manual switching does not ena-
ble the system to operate opti-
mally Manual switching in the program
or in the visualisation
47 "Sensor fault, hot gas t" The hot gas temperature can no
longer be measured Hot gas temperature sensor faul-
ty
48 "Sens.fault,oil press.1" Compressor 1 remains shut
down for as long as the fault is
current The oil pressure sensor of com-
pressor 1 is faulty
Appendix
Overview of fault messages
(cont.)
5801 531 GB