Proheat M125 - Manual (Page 67)

IGNITION MODULE Diagnostic Code 10
Indicates an open circuit or an over-load fault is detected.
Troubleshoot the Ignition Module diagnostic code based on:
Ignition Module and G-II PCM – electrical.
Test procedure – Ignition Module and G-II PCM:
a) Disconnect all harnesses at the G-II PCM.
b) Disconnect the fuel supply line.
c) Loosen and back out the burner head mounting (2) bolts five to six turns
allowing enough room to rotate the burner head 15° counter-clockwise
and remove.
d) Disconnect the Ignition Module connector at the G-II PCM.
e) Inspect the G-II PCM connector for damage and corrosion. Inspect the
ignition coil harness and connector for damage and corrosion.
If no damage or corrosion is found the Ignition Module is faulty. Go to Ignition
Module replacement, this page.
4.1.11
(10 Flashes)
Figure 4-32: Burner Head Removal and Ignition Module Replacement.
MOUNTING EARS (2)
MOUNTING BOLTS (2)
TORQUE = SEE SECTION 1.3
COOLANT PUMP
SWITCH INPUT
DUAL MODE TEMP
SENSOR
POWER
FUEL INLET
NOTICE
All plugs/harnesses must be rein-
stalled into the G-II Proheat Control
Module (G-II PCM) before heater
goes back into service.
IGNITION MODULE
SCREWS (2)
TORQUE = SEE
SECTION 1.3
FLAME
SHIELD
IGNITION ELECTRODE
ASSEMBLY
Ignition Module replacement:
a) Remove ignition electrode assembly. Use a flat head screwdriver to pry
the electrode assembly out.
b) Remove the flame shield. Rotate to match the mounting square.
c) Remove Ignition Module (2) mounting screws and Module.
d) Reinstall the new Ignition Module.
e) Reinstall flame shield and electrode assembly.
f) Reconnect Ignition Module connector at the PCM.
4-30 PROHEAT M-SERIES G-II PCM SERVICE MANUAL