61
TECHNICAL ASSISTANCE SERVICE
Error
code
via QAA
Diagnostic
info
Description of error
Type of fault
System action
Procedure
162
82
Air pressure switch
contacts not closed
(not used)
Air pressure switch con-
tacts not closed
Burner lockout
(permanent).
Lockout reset re-
quired
Check the air pressure
switch. External error
164
137
Water pressure
switch/CH circuit flow
switch error (not
used)
No further differentiation
Burner lockout
(permanent).
Lockout reset re-
quired
Check the heating circu-
it. External error
164
138
Air pressure switch
error (not used)
No further differentiation
Safety shutdown
Check the heating circu-
it. External error
166
81
Air pressure switch
does not open (not
used)
The air pressure switch
does not open. Check the
contacts for sticking
Burner lockout
(permanent).
Lockout reset re-
quired
Check the air pressure
switch. External error
169
164
Internal error
Internal error
Burner lockout
(permanent).
Lockout reset re-
quired
Contact Technical Assi-
stance Service
169
167
Stepper motor
feedback is not cor-
rect
Stepper motor feedback is
not correct
Burner lockout
(permanent).
Lockout reset re-
quired
Contact Technical Assi-
stance Service
169
362
Free to be assigned
No further differentiation
Safety shutdown
--
169
…
Free to be assigned
No further differentiation
Safety shutdown
--
169
373
Free to be assigned
No further differentiation
Burner lockout
(permanent).
Lockout reset re-
quired
--
169
375
Circuit open
Circuit open
Burner lockout
(permanent).
Lockout reset re-
quired
Contact Technical Assi-
stance Service
169
586
Free to be assigned
No further differentiation
Message
--
169
587
Software error
Differential control has
exceeded upper threshold
(645)
Burner lockout
(permanent).
Lockout reset re-
quired
OEM parameter not
editable via QAA. Contact
Technical Assistance
Service
169
588
Software error
Differential control has
fallen below lower th-
reshold (646)
Burner lockout
(permanent).
Lockout reset re-
quired
OEM parameter not
editable via QAA. Contact
Technical Assistance
Service
169
595
Software error
Differential control has
exceeded upper threshold
(694)
Message
OEM parameter not
editable via QAA. Contact
Technical Assistance
Service
169
596
Software error
Differential control has
exceeded upper threshold
(695)
Message
OEM parameter not
editable via QAA. Contact
Technical Assistance
Service
169
597
Software error
Drift test has exceeded
programmed limit W1
(655)
Message
OEM parameter not
editable via QAA. Contact
Technical Assistance
Service