Component Troubleshooting - Maytag MGR6775ADB Service Manual

Troubleshooting Procedures
To avoid risk of electrical shock, personal injury or death; disconnect power and gas to oven before servicing,
unless testing requires power and/or gas.

Component Troubleshooting

Problem
Burners will not ignite; no
spark at top burner.
Burner will not ignite. No
spark to burner ignitors when
burner knob is rotated to
"LITE" position.
No spark or only random
spark at one ignitor.
Unit continues to spark after
knob is turned to OFF
position.
No oven operation in bake or
broil.
14
!
WARNING
Possible Cause
Poor ground on burner cap..........................
Weak or failed spark module.......................
Low gas pressure ........................................
No 120 VAC to range ..................................
Micro switch contacts not closing ................
Faulty wiring. Bad connection at burner
electrode and electrode socket ...................
Inoperative spark module ............................
Electrode dirty. Burner cap dirty ..................
Cracked or broken electrode, electrode
wire or electrode socket...............................
Check for cracked ignitor or pinched ignitor
wire .............................................................
Poor continuity to burner cap.......................
Bad ground connection or lack of continuity
to ground or ignitor ......................................
Cracked or broken ignitor extension lead....
Shorted valve switch/harness......................
Switch has slipped off the valve ..................
No voltage to control....................................
No voltage from control ...............................
Loose wire connection or broken wire .........
16023415
Correction
• Clean burner cap.
• Replace spark module.
• Verify pressure 4" WCP for
natural, 10" WCP for LP.
• Verify voltage at wall outlet.
• Check wiring against appropriate
wiring diagram. Verify all
terminals and connections are
correct and tight. Check micro
switch contacts.
• Check wiring against appropriate
wiring diagram. Verify all
terminals and connections are
correct and tight.
• Check module according to
testing procedures information.
•
Clean electrode or burner cap.
• Replace electrode.
• Replace ignitor lead or electrode.
• Clean burner cap and lead.
• Tighten ground connection and
correct any breaks in ground path
from ignitor path to unit ground
path.
• Replace ignitor lead.
• Replace switch/harness. If
shorting is caused by excessive
spillovers, customer education is
advised.
• Carefully reposition switch on
valve and rotate from OFF to
high, several times to verify
switch is not broken.
• Check for 120 VAC at control. If
no voltage check power source.
• Check 120 VAC to ignitor, if no
voltage, replace control.
• Verify all connections are clean
and tight, replace broken wire.
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