41
FAULT SOLUTION SECTIONS
D
E
F
G
1.
2.
Temperature sensor faulty.
Check correct location and wiring
YES
i
Temperature sensors faulty.
Cold resistance approximately
10k0 @ 77
°
F (CH sensor)
20k0 @ 77
°
F (Flue sensor)
(resistance reduces with increase in temp.)
, __ N_o __ �.,, Replace sensor
Gas at burner
Ensure gas is on and purged
.----------------, NO
Check wiring & PCB - X36 and X2 connector.
See Wiring Diagram.
Check and correct if necessary
1. Inlet gas pressure
2. Ignition electrode and lead
3. Electrode connection
4. Spark gap and position
5. continuity between burner and
earth
6. Condensate trap blocked
Check the gas supply pressure:
For Natural Gas greater than
3.5
"
wc
For LPG greater than
8"
wc
Check and correct if necessary
1. Flame sensing electrode position
YES
f-----+
Check the resistance of the
coils:
Pin 1 and 3 = 20 - 30 Ohm
Pin 2 and 4 = 60 - 70 Ohm
Check wiring.
See Wiring Diagram
Replace gas valve
YES .-----------,
Replace PCB
NO
J
Replace PCB
2. Flame sensing electrode and lead connections
3.Recirculation of flue
4. Calibration
H
Replace flame sensing electrode or gas valve
(CO2 values - see instruction)
I
PN 240012875 REV. A [01/31/2020]
Содержание Dunkirk DCBF-125
Страница 63: ...61 A 1 MODELS 125 Heat Only APPENDIX A WIRING DIAGRAMS 240012879 REV A 01 31 2020...
Страница 64: ...62 APPENDIX A WIRING DIAGRAMS A 2 MODELS 165 Heat Only 240012879 REV A 01 31 2020...
Страница 65: ...63 A 2 MODELS 150 Combi APPENDIX A WIRING DIAGRAMS 240012879 REV A 01 31 2020...
Страница 66: ...64 A 4 MODELS 205 Combi APPENDIX A WIRING DIAGRAMS 240012879 REV A 01 31 2020...
Страница 67: ...65 NOTES 240012879 REV A 01 31 2020...
Страница 68: ...66 NOTES 240012879 REV A 01 31 2020...
Страница 90: ...20 150F 205F WITH ZONE PUMPS WIRING DIAGRAM 150F 205F WITH ZONE PUMPS PN 240012875 REV A 01 31 2020...
Страница 92: ...22 150F 205F WITH ZONE VALVES WIRING DIAGRAM 150F 205F WITH ZONE VALVES PN 240012875 REV A 01 31 2020...
Страница 98: ...28 MODEL 125F Heat Only 125F FLOOR STANDING HEAT ONLY WIRING DIAGRAM PN 240012875 REV A 01 31 2020...
Страница 99: ...29 MODEL 150F Combi 150F FLOOR STANDING COMBI WIRING DIAGRAM PN 240012875 REV A 01 31 2020...
Страница 100: ...30 165F FLOOR STANDING HEAT ONLY WIRING DIAGRAM MODEL 165F Heat Only PN 240012875 REV A 01 31 2020...
Страница 101: ...31 205F FLOOR STANDING COMBI WIRING DIAGRAM MODEL 205F Combi PN 240012875 REV A 01 31 2020...
Страница 106: ...36 Low Water Cutoff Detail LOW WATER CUTOFF NO NO YES PN 240012875 REV A 01 31 2020...
Страница 114: ...44 NOTES PN 240012875 REV A 01 31 2020...
Страница 115: ...45 NOTES PN 240012875 REV A 01 31 2020...
