GE JB960, Technical Service Manual

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ERC FAILURE  CODES

• Measure each sensor lead from connector block to ground.  If shorted,  look for pinched or cut wire in

sensor circuit.

• Check connector terminals - Look for deformed or corrosion on terminals.  Repair or replace.
• Check connector at sensor (remove sensor and carefully pull leads with connector into oven)
• If all above is ok replace control.

FAILURE

MEANING

CORRECTION

CODE

-F0-
-F1-
-F7-

Stuck key pad or transistor
failure. May mean relay is
turned on.

If code cannot be cancelled, replace
control.

 -F2-

Also see

fan

thermal

switches

Indicates that oven is over
temperature in one of the following
modes within either a cooking or
clean mode of operation.
• Control senses oven

temperature above 630

°

F with

• Look for welded relay contacts.  (Heating

elements on in off mode).

• Look for high resistance in the sensor

circuit due to high contact resistance
(poor terminal crimp, deformed terminals,
loose connection inside sensor tube) or
intermittent solder joint.

• Electrical noise interference in the sensor

circuit (Ham radio, cordless phone etc.).

the door circuit in the unlock mode.
• Control senses oven temperature above

930

°

F with the door in the door locked mode.

-F3-
-F4-

Open sensor (circuit) (over 2700
ohms) Shorted sensor (circuit)
(under 950 ohms)

Could be result of contamination on
terminals, pinched harness lead, or cold
solder joint on control.

• Disconnect power to range.
• Disconnect sensor connector at control.

Measure sensor resistance at control
connector (take care not to damage
terminals in block) - Should read 1100

Ω

 at

room ambient (approx. 72

°

F).

-FC-

Check wiring and test operation of switches.
Perform resistance check.

Problem with door lock circuit such
as pinched wires between control
and door lock switches.

-FF-

Door motor safety switch transistor
failure

Replace control.

     -F5-

Loss of relay drive circuit

• Press Clear/Off and reprogram control.

If -F5- code reappears, replace control.

• Check sensor circuit.
• Check lock circuit.

If all above check OK the F5 code can be a result of a momentary loss of power (DO
NOT REPLACE CONTROL AND LOCK.) Check lock circuit.

NOTE:Connections can be intermittent due to a corrosive  buildup  between the
connection to the terminals, or by being bent by the insertion of a probe, etc.