Rational iCombi Classic

1
Service error: 33.4
Error tree: Automatic ignition controller
Service error: 33.4
Unit type: iCombi
V01 · 05/2021 · RTS/Shof · en-GB
Error in the gas combustion system
"Blocking error" → after the error has been resolved, automatic reset
Service error 33.4
Switch the unit to the gas type declared on the
nameplate.
Note: Repeat flue gas check required!
Does the connected gas type match what is indicated
on the nameplate?
No
Yes
Service 33.4
Polarity errorGas error 44
Phase (L) and neutral conductor (N)
interchanged?
Switch the phase (L) and neutral conductor (N)
(reverse the safety plug connection).
Yes