Rational iCombi Pro Troubleshooting Manual page 19

Error tree: Automatic ignition controller
Service error: 33.3
Unit type: iCombi
Service error: 33.3
Service error 33.3
Does the connected gas type match what is indicated
on the nameplate?
Yes
Error in the gas combustion system
"Blocking error" → after the error has been resolved, automatic reset
Service 33.3
Mains frequency errorGas error 45
Mains frequency outside the valid range
of 40...70 Hz?
Yes
Check the mains frequency, switch the unit off
and on again.
1
Switch the unit to the gas type declared on the
No nameplate.
Note: Repeat flue gas check required!
V01 · 05/2021 · RTS/Shof · en-GB