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7.3
Error code list with operation via internal LED
Error code Clear text
bAC Er3
Fault of compatibility program module to basic unit during
backup process
Err PrC
Fault of program module
Loc 2
No establishment of flame at the end of the safety time
Loc 3
Air pressure faulty (air pressure switch welded in no-load po-
sition), decrease to specified time (air pressure switch) re-
sponse time)
Loc 4
Extraneous light
Loc 5
Air pressure faulty, air pressure switch welded in working po-
sition
Loc 6
Fault of actuator
Loc 7
Loss of flame Too many losses of flame during operation
(limitation of repetitions)
Loc 8
---
Loc 9
---
Loc 10
Error not relatable (application), internal error
Loc 12
Valve proving
Loc 13
Valve proving
Loc 14
POC error
Loc 20
Gas pressure switch min open
Loc 22
Safety loop open
Loc 60
Analog power source 4...20 mA, I < 4 mA
Loc: 83
Faulty PWM fan
Loc 138
Restore process successful
Loc 139
No program module detected
Loc 167
Manual locking
Loc: 206
AZL2... incompatible
Loc: 225
Faulty PWM fan
Loc: 226
Faulty PWM fan
Loc: 227
Faulty PWM fan
rSt Er1
Error in compatibility program module to basic unit during re-
store process
Operation, indication, diagnostics
39
GB
Possible cause
Program sequence of program module does not match the
basic unit
–
Error in data content of program module
–
No program module fitted
–
Faulty or soiled fuel valves
–
Faulty or soiled flame detector
–
Poor adjustment of burner, no fuel
–
Faulty ignition equipment
Air pressure switch faulty
–
Loss of air pressure signal after specified time
–
Air pressure switch is welded in no-load position
Extraneous light when burner startup
Time out air pressure switch
–
Air pressure switch is welded in working position
–
Actuator faulty or blocked
–
Faulty connection
–
Wrong adjustment
–
Faulty or soiled fuel valves
–
Faulty or soiled flame detector
–
Poor adjustment of burner
Free
Free
Wiring error or internal error, output contacts, other faults
Fuel valve 1 leak
Fuel valve 2 leak
Error valve closure control POC
Gas shortage
–
Gas pressure switch-max open
–
Safety limit thermostat cut out
Wire breakage
–
PWM fan does not reach the target speed within the pre-
set period of time, or
–
After reaching the target speed, the PWM fan leaves the
tolerance band again (P650) for a time exceeding the tol-
erance time speed deviation (P660)
Restore process successful
No program module identified
Manual locking
Use the latest version
–
Fan speed dropped below the minimum prepurge PWM
(P675.00) after reaching the prepurge speed, or
–
After reaching the ignition load speed, the maximum ig-
nition load PWM (P675.01) was exceeded
Parameterization error:
–
Speed low-fire > speed high-fire, or
–
Low-fire = 0 rpm, or
–
Maximum speed = 0 rpm
One or several parameters violate the minimum/maximum
limit
Program sequence of program module does not
match the basic unit
20051011
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