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Status code
Meaning
S.96
Return sensor test running, heating demands are blocked.
S.97
Water pressure sensor test running, heating demands are blocked.
S.98
Flow/return sensor test running, heating demands are blocked.
S.105
Low heating flow rate, carry out purging P00 again. (Proklima)
F
Overview of fault codes
Applicability: ecoCOMPACT
Code
Meaning
F.00
Flow temperature sensor interruption
F.01
Return temperature sensor interruption
F.03
Cylinder sensor fault
F.10
Flow temperature sensor short circuit
F.11
Return temperature sensor short circuit
F.13
Cylinder sensor short circuit
F.20
Safety shutdown: Temperature cut-out
F.22
Safety shutdown: Water deficiency
F.23
Safety shutdown: Temperature spread too great
F.24
Safety shutdown: Temperature rise too fast
F.25
Safety shutdown: Flue gas temperature limiter
(accessory for Austria) or other safety compon-
ents on the pre-fitted plug on X20
F.26
Fault: Gas valve assembly without function
F.27
Safety shutdown: Recording incorrect flames
F.28
Failure during start-up: Ignition unsuccessful
F.29
Failure during operation: Re-ignition unsuccess-
ful
F.32
Fan fault
F.35
Lack of air in combustion unit
F.42
Coding resistor fault (possible in combination
with F.70)
F.47
Detachment of domestic hot water sensor in
cylinder outlet (flow rate detection)
F.48
Domestic hot water sensor short circuit at cylin-
der outlet (flow rate detection)
F.49
Fault: eBUS
0020181421_04 ecoCOMPACT Installation and maintenance instructions
Cause
NTC plug not plugged in or has come loose, multiple plug on the PCB
not plugged in correctly, interruption in cable harness, NTC defective
NTC plug not plugged in or has come loose, multiple plug on the PCB
not plugged in correctly, interruption in cable harness, NTC defective
NTC defective, NTC cable defective, defective plug connection on NTC
NTC defective, short circuit in cable harness, cable/housing
NTC defective, short circuit in cable harness, cable/housing
NTC defective, short circuit in cable harness, cable/housing
Incorrect earth connection between cable harness and unit, flow or re-
turn NTC sensor defective (loose connection), stray spark via ignition
cable, ignition plug or ignition electrode. Pump blocked, air present.
No or insufficient water in the product, water pressure sensor defective,
cable to pump or water pressure sensor loose/not connected/defective
Pump blocked, insufficient pump output, air in product, flow and return
NTC connected the wrong way round
Pump blocked, insufficient pump output, air in product, system pressure
too low, non-return valve blocked/incorrectly installed
NTC defective, short circuit in cable harness, cable/housing
Gas valve assembly stepper motor not connected, multiple plug on the
PCB not plugged in correctly, interruption in cable harness, gas valve
assembly stepper motor defective, electronics defective
Moisture on the electronics, electronics (flame monitor) defective, gas
solenoid valve leaking
Gas meter defective or gas pressure monitor has triggered, air in gas,
gas flow pressure too low, thermal isolator device (TAE) has triggered,
condensate route blocked, incorrect gas injector, incorrect spare part
gas valve assembly, fault on the gas valve assembly, multiple plug on
PCB incorrectly plugged in, break in cable harness, ignition system
(ignition transformer, ignition cable, ignition plug, ignition electrode)
defective, ionisation flow interrupted (cable, electrode), incorrect earthing
of product, electronics defective
Gas supply temporarily stopped, flue gas recirculation, condensate route
blocked, defective earthing of product, ignition transformer has spark
failure
Plug on fan not correctly plugged in, multiple plug on PCB not correctly
plugged in, break in cable harness, fan blocked, Hall sensor defective,
electronics defective
Fan speed not correct, air supply or smoke outlet blocked, plug not
correctly connected to fan, multiple plug on PCB not correctly connected,
break in cable harness, fan blocked, Hall sensor defective, electronics
defective
Short circuit/interruption in output range coding resistor (in cable harness
at heat exchanger) or gas group resistor (on PCB)
NTC defective, NTC cable defective, defective plug connection on NTC
NTC defective, short circuit in cable harness, cable/housing
Short circuit on eBUS, eBUS overload or two power supplies with differ-
ent polarities on the eBUS
Appendix
51
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