86
9 Appendix
Fault
Code
No.
Restart according to Description
TRD EN676
233 >88 3 Fuel/air ratio control blocked: channel 3
H
234 >88 3 Fuel/air ratio control blocked: channel 4
H
235 >88 3 Fuel/air ratio control blocked: channel 5
H
301 1 1 Broken wire at firing rate input -1
H/Ü Check the wiring.
302 1 1 Broken wire at firing rate input-2
H/Ü Check the wiring.
320 1 1 Broken wire at correction input
H/Ü Check the wiring.
321 1 1 Broken wire at feedback channel 1
H/Ü Check the wiring; check the potentiometers for short circuit.
322 1 1 Broken wire at feedback channel 2
H/Ü Check the wiring; check the potentiometers for short circuit.
323 1 1 Broken wire at feedback channel 3
H/Ü Check the wiring; check the potentiometers for short circuit.
324 1 1 Broken wire at feedback channel 4
H/Ü Check the wiring; check the potentiometers for short circuit.
325 1 1 Broken wire at feedback channel 5
H/Ü Check the wiring; check the potentiometers for short circuit.
351 1 1 Different status of ignition position relay
H/Ü Check the signal for curve selection.
Bouncing signal?
Possible bus problems.
352 >88 3 Invalid curve selection (no signals)
H/Ü Check the signal for curve selection.
Possible bus problems.
353 >88 3 Invalid curve selection (several signals)
H/Ü Check the signal for curve selection.
Possible bus problems.
360 0 0 Shut down from O
2
controller (1) or CO controller (2) :
H Initially, the time from parameter P904 "O
2
trim active after ignition in seconds" runs
out before the fault is permitted.
361 1 1 Different status of ignition position relay
H/Ü
362 0 0 carry out burner servicing
H/Ü The maintenance counter is reset by changing parameter 713 or 714
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