45
Central Heating
Turn on mains power.
The display illuminates
NO
Go to section 'A'
YES
Error 11 O or 133 or 134
or 135 or 125 or 384 or
09 or 15 flashing
NO
YES
Press the 'Reset' button for
between 1-3 seconds
NO
If m 09, m 15 and m 384 is flashing or re-occurs regularly
check all PCB connections, if this has no effect replace
the PCB.
If the E11 O is still flashing. Go
to section 'H'
Error 20, 28, 40, 50, 321 or 431 flashing
Go to section 'D',
if E55 is displayed go to section N
NO
Error 117 or 118 flashing
NO
Turn Central Heating
thermostat to Maximum.
Pump runs.
YES
Fan runs after 1 minute from the
request
YES
Fan runs at correct speed
YES
Spark at ignition electrodes for
up to 5 seconds and for 5
attempts.
YES
NO
Burner lights
YES
Error E109 flashing
NO
Error E 11 O flashing
NO
3 way valve open to central
heating circuit
YES
Burner output modulates to
maintain the temperature set
YES
YES
YES
YES
YES
Error E130 flashing
NO
YES
Burner goes out
YES
Go to section 'I'
NO
NO
Ensure all controls and
Programmers are calling
for heat
NO
Error 160 flashing
Go to section 'C'
NO
Error 160 flashing
Go to section 'C'
NO
Error 133 flashing
Go to section 'E'
Burner does not stay alight
after 5 seconds
Error E125 flashing
after 1 minute
Go to section 'H'
NO
Go to section 'K'
YES
NO
YES
YES
YES
Ensure controls are set to
demand and verify the
contacts are closed
Go to section 'B'
If E53 is displayed go to section 0
Go to section 'F'
Press the 'Reset' button for
between 1-3 seconds
Error 128 or E129flashing (loss of flame 12
times) Go to section 'G'
Go to section 'J'
NO
Check the Central Heating NTC sensor
Go to section 'D'
Go to section 'M'
Fan stops after 30 seconds
YES
Operation sequence
successful
TROUBLESHOOTING CHART
PN 240011430 REV. P [09/15/2021]
Summary of Contents for MAC-115
Page 2: ...MAC 205 ...
Page 4: ...MAH 165 ...
Page 77: ...73 APPENDIX A WIRING DIAGRAMS A 2 MODEL 125 Heat Only 240013354 REV B 09 15 2021 ...
Page 78: ...74 APPENDIX A WIRING DIAGRAMS A 3 MODEL 165 Heat Only 240013354 REV B 09 15 2021 ...
Page 79: ...75 APPENDIX A WIRING DIAGRAMS A 1 MODEL 115 Combi 240013354 REV B 09 15 2021 ...
Page 80: ...76 APPENDIX A WIRING DIAGRAMS A 4 MODEL 150 Combi 240013354 REV B 09 15 2021 ...
Page 81: ...77 APPENDIX A WIRING DIAGRAMS A 5 MODEL 205 Combi 240013354 REV B 09 15 2021 ...
Page 82: ...78 NOTES 240013354 REV B 09 15 2021 ...
Page 118: ...34 MODEL 125 Heat Only 125 HEAT ONLY WIRING DIAGRAM PN 240011430 REV P 09 15 2021 ...
Page 119: ...35 MODEL 165 Heat Only 165 HEAT ONLY WIRING DIAGRAM PN 240011430 REV P 09 15 2021 ...
Page 120: ...36 115 COMBI WIRING DIAGRAM MODEL 115 Combi PN 240011430 REV P 09 15 2021 ...
Page 121: ...37 MODEL 150 Combi 150 COMBI WIRING DIAGRAM PN 240011430 REV P 09 15 2021 ...
Page 122: ...38 MODEL 205 Combi 205 COMBI WIRING DIAGRAM PN 240011430 REV P 09 15 2021 ...
Page 127: ...43 Low Water Cutoff Detail LOW WATER CUTOFF NO NO YES PN 240011430 REV P 09 15 2021 ...
Page 132: ...48 3 FAULT SOLUTION SECTIONS PN 240011430 REV P 09 15 2021 ...
