Groen BPM-15G, Operator'S Manual

Page: 17 / 36

OM-BPM/BPP-G 17
Troubleshooting
SYMPTOM WHO WHAT TO CHECK (X indicates work that should only be performed by a qualified service representative)
Pilot lights, but main burner
will not come on and spark
does not stay on
Authorized
Service Rep Only
a. Check controller to see that it is closed at temperature setting higher than that of
the current pan temperature. X
b. For 24 V between terminals MV and to ground. If 24V is not present, replace the
ignition control module. X
c. That gas pressure is at least 3.5” W.C.(8.7millibars). X
d. Electrical connections of the main valve to terminals, to assure that they are
securely attached. Check solenoid operation for main valve on gas valve. Repair
or replace as necessary. X
e. That secondary thermostat switch is closed.X
Pilot lights, but main burner
will not come on, the spark
stays on
Authorized
Service Rep Only
a. Check for improper grounding. If necessary, repair with high temperature wire. X
b. Pilot burner ceramic insulator for cracks. X
c. That high tension cable is not grounded out. If it is, correct the ground-out
condition or the pilot burner. X
d. For proper gas pressure. X
e. Clean pilot assembly, or replace if necessary. X
f. Tighten all mechanical and electrical connections. X
g. Replace ignition control module. X
Main burner comes on but
will not stay on.
Authorized
Service Rep Only
a. Check burner ground for bad wire or connection. Replace if necessary with high
temperature wire. X
b. Check for low gas supply pressure. If necessary, replace ignition control module. X
Pilot will not light.
User a. Lighting procedure, to ensure that the instructions in the Operation
section of this manual are followed.
Authorized
Service Rep Only
b. That the pilot gas supply line is purged of air. X
c. Pilot gas adjustment screw, to ensure that it is open. X
d. Pilot tubing and orifice for clogging. X
Pilot flame goes out when
Combination Control knob is
released.
Authorized
Service Rep Only
a. Pilot gas adjustment. X
b. Are connections from Powerpile generator to Pilotstat power unit
and Powerpile operator clean and secure? X
c. Are open and closed circuit output voltages of the generator in the
acceptable range shown by the charts in the manual for the W720
Systems Tester? X
d. Resistance of the Pilotstat power unit. X
e. If an appropriate meter is not available, replace the generator first,
then the power unit. X
Pan will not heat, and pilot
light is out.
User a. Is the Combination Gas Control Valve knob turned ON?
b. Check the pilot tubing and orifice for clogging.
Authorized
Service Rep Only
c. Are connections from Powerpile generator to Pilotstat power unit
and Powerpile operator clean and secure?X
d. Are Open and closed circuit output voltages of the generator in the
acceptable range shown by the charts in the manual for the W720
Systems Tester?X
e. If an appropriate meter is not available, replace the generator. X
Pan will not heat, but pilot
light is burning.
Authorized
Service Rep Only
a. That secondary thermostat switch is closed.
MODELS WITH POWER TILT
SYMPTOM WHO WHAT TO CHECK
(X indicates work that should only be performed by a qualified service representative)
Pan will not tilt.
User a. That electrical power supply is on.
b. For overheated actuator motor. Wait 15 minutes for motor to cool,
then operate the power tilt.
Authorized
Service Rep Only
c. For blown fuse on motor control circuit - Replace fuse with
approved equal.
d. For damaged DC rectifier and operating relays.
e. Correct setting of upper and lower limit switches.