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REMKO MWL series
Fault display – Malfunction codes (continued)
Error ID
Description
ID7204
Open contact - storage tank 1 top probe
ID7205
Short circuit - storage tank 1 top probe
ID7212
Open contact - inlet temperature probe
Short circuit contact - inlet temperature
ID7213
probe
ID7258
Maximum hot gas temperature
ID7276
Restart required
Open contact - internal return tempera-
ID7283
ture probe
Short circuit - internal return temperature
ID7284
probe
ID7285
Low suction gas temperature
ID7286
Coding error
The medium flow rate in the brine circuit
ID7321
is too low
ID7322
Freeze protection - brine circuit
ID7327
Open contact - exhaust air temperature
ID7330
Short circuit - exhaust air temperature
ID7331
Open contact - supply air temperature
ID8003
Cancel silent mode
The medium flow rate in the heating
ID8101
cycle on the secondary side is too low to
start the heat pump
The anti-freeze protection function is cur-
ID8132
rently active - check the room climate
mode set
The hygiene function was cancelled due
ID8227
to the maximum runtime being reached
before attaining the set temperature
56
Probe
Possible causes/remedial measures
S08
S08
S04
S04
S03
S03
Rc
Too little pressure/air in the primary cir-
cuit in the feeder lines? Check the func-
tion of the feeder pump,
S21
Capacity of the feeder pump (set) too
low? Check zone valve, does the zone
valve open correctly? In case of possible
defect, initiate service call
Check the function of the source heat
generator/source heat pump. Sensors in
the source buffer storage defective? Set
the target temperature correctly. EVU
source disconnection active?
S02
S02
S01
Check the actuators in the heating cycle
S20
manifold. Check room thermostats, set
higher, open
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