Henny Penny PFG-690 Technical Manual page 14

1-3. TROUBLESHOOTING
(Continued)
Problem
Shortening will not heat
Oct. 2002
Cause
HEATING OF SHORTENING SECTION
•
Gas valve knob turned to the OFF
position
•
Blown fuse or tripped
circuit breaker at supply
box or control panel
•
Blown fuse in PC board
•
Faulty Power/Pump switch
•
Faulty cord and plug
•
Faulty drain switch
•
Faulty PC Board
•
Faulty high limit control switch
•
Drain valve open
•
Possible faulty gas control
valve
•
Possible faulty temperature probe
•
Bad spark ignitor
•
Low air pressure
•
Faulty ignitor module
•
Spark ignitor or flame sensor out of
adjustment
1-8
Correction
• Make sure the gas valve knob is
turned to the ON position
•
Reset breaker or replace fuse
•
Replace glass fuse in board
•
Check Power/Pump switch
per maintenance section on
the Power/Pump switch
•
Check cord and plug and
power at wall receptacle
•
Check drain switch per
maintenance section on
drain switches
•
Remove and replace control
panel
•
Check high limit control
switch per maintenance
section on the high limit
•
Close drain valve
•
With power removed from
fryer, check across elec-
trical leads of gas control valve
with multimeter, and gas
valve in ON position
•
Replace temperature probe
•
Replace spark ignitor
•
Clean or replace blower
•
Replace air pressure switch
•
Replace module
• The spark ignitor must be 1/8 inch
from the pilot hood, and 1/4 inch
from the flame sensor
Model 690