Instructions condensing Air heaters type HR
Page 19/31
To simplify the investigation of the failing heater please check first:
•
Check the fuses as well as the wires and plugs in the heater for possible loose contacts.
•
In a heat-demand situation, the green LED on the heater must light up.
•
In a failure situation, the red LED on the heater must light up, if so, reset.
•
Use first the service-button to put the heater in run mode, try later the room thermostat.
Volatile lock out
Can only be reset by hand
A
/
0
Blinking
Internal failure
Print board defective
A
/
1
Blinking
No Flame
Within 5 sec flame, then flame failure: Case 1:
No flame: Case 2
A
/
2
Blinking
Exchanger too hot Heater stops on temperature heat exchanger too hot. Case 3
A
/
3
Blinking
Sensor error
Temperature sensor on heat exchanger error. Case 4
A
/
4
Blinking
Too many flame
failures
Too many flame failures on ionisation; Case 1, 5
A
/
5
Blinking
Internal error
Print board defective
A
/
6
Blinking
Safety relays
Safety relay failure Case 10
A
/
7
Blinking
Flame
Flame detection when there should not be a flame or
The flue gas temperature sensor detects an error condition,
case 12.
A
/
8
Blinking
Burner fan
Burner fan dos not run; Case 6
Burner fan runs; Case 7
A
/
9
Blinking
Pressure switch
Insufficient air transport over the heat exchanger, Case 11
Non volatile lockout
Will disappear when the error is cleared.
E
/
0
Blinking
Internal defect
Print board defective
E
/
1
Blinking
1
e
temperature
safety
Heater stops on temperature heat exchanger too hot. When
heater is cooled down the heater will restart. Case 3
E
/
2
Blinking
Selection
resistance
Heater recognition does not work Case 8
E
/
3
Blinking
Selection
resistance
Heater recognition does not work Case 8
E
/
9
Blinking
Reset error
Too many switches on reset button Case 9
Case 1:
Within 5 sec flame, then flame failure.
•
The flame is not detected. Check the ignition cable and electrode. (cable resistance 1K
ohm
•
The heater has electrically a poor earth.
•
The print board is defective.
