Proheat M80 - Manual (Page 39)

PROHEAT G-I PCM SERVICE MANUAL 4-8
Fuel Shut-off Valve – Check:
a) Fuel Shut-off Valve and G-I PCM - electrical open circuit fault.
b) Valve plunger – mechanical fault. Test the PROHEAT operation; Fuel
Shut-off Valve plunger removed.
Procedure – Coil and G-I PCM – electrical fault:
a) Disconnect all harnesses at the G-I 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) Remove the Fuel Shut-off Valve connector. Use a small flat head
screwdriver to lift the connector locking tab, pulling up on the
connector to remove.
START: Fuel System Step 4
(1 Flash)
Figure 4-9: G-I PCM Fuel Shut-off Valve Connection
G-I PCM FUEL SHUT-OFF
VALVE CONNECTION
NOTICE
It is recommended that the Fuel
Regulator be serviced at the same
time as the Fuel Shut-off Valve. Go
to page 4-11, Step 5.
Figure 4-7: Burner Head Removal
MOUNTING EARS (2)
MOUNTING BOLTS (2)
TORQUE = SEE SECTION 1.3
COOLANT PUMP
SWITCH INPUT
TEMP SENSOR 1
POWER
FUEL INLET
LOCK
Figure 4-8: Connector Removal