NO HEAT ERROR (UPPER OVEN)
If you have any of these older models
ELECTRIC RANGE LRE3012, LRE30451, LRE30453, LRE30757
The F9 error code means oven too hot.
See the F6 ERROR CODE for troubleshooting oven too hot.
For ALL OTHER MODELS not listed above continue to troubleshoot F9 upper oven not heating error code using this article.
Cause
Starting temperature of 130 ºF or less, and the oven door is closed.
The oven inside temperature does not go up more than 10 ºF compared with the starting temperature for 5 minutes after the start of cooking.
Solution
Check Main PCB connections and Temperature probe connections.
DETAILS BELOW:
ELECTRIC OVEN BURNER CHECKS
Check connections at the Main PCB and the Elements for loose or damaged connections, reseat. Check Elements for proper Resistance.
CHECK OVEN TEMPERATURE PROBE
Check the thermostat for continuity. If the thermostat does not have any continuity then it is open. Replace the thermostat to restore voltage going to the element.
ELECTRIC OVEN BURNER CHECKS
Check connections at the Main PCB and the Elements for loose or damaged connections, reseat. Check Elements for proper Resistance.
If the Elements have the proper resistance, and 240Vac but the unit is still not heating and giving the Error Codes, put an Amp Clamp on the Element leads and confirm if the Element is pulling an Amp draw. If its not the Element may be opening under a load, replace Element.
GAS OVEN BURNER IGNITION
If the unit is a gas unit and is giving an F9, F19 the main needs to see approximately 3.3 Amps before it will open the gas valve. The range of resistance for the igniter is approximately 45 ~ 400Ω, 3.1 ~ 3.3 amps, 1 ~ 3Ω gas valve.
The valve is in series with the ignitor (glow bar).
When 120 VAC is applied, the ignitor requires a minimum of 116, leaving only about 4 volts to operate the valve.
The ignitor will remain energized at all times the burner is operating.
As Ignitor Heats – Resistance Decreases
116 VAC minimum & 3.3 amps
