M Series Oven Lower Cooling Fan HES Stall Detected | 4A10 Error
Topics:
- Fault code, error code 4A10
- 4A10 shown on control panel
- M Series Oven shows 4A10
- Lower cooling fan HES stall detected
Cause:
- Lower cooling fan HES stall detected
The cooling fan will detect a stall if both these conditions are true:
- Speed is below 1200 RPM
- Speed is more than 200 RPM less than the requested speed
Relay board changes fan speed by pulsating the AC voltage.
- Multimeters are unable to read pulsating voltage.
- Pulsating can only be measured with an oscilloscope (O-scope) which is not a common tool for a service technician to have.
The voltage to the speed sensor should be 5 VDC between pin 1 and pin 2 on the harness connector.
Answer:
If error 4832 occurs, no troubleshooting advice is available and service is required to expertly diagnose and repair the product. Contact Factory Certified Service to schedule an appointment for repair.
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