- Model Number
- KMHC319ESS4
- Brand
- KitchenAid
- Age
- 1-5 years
This is similar to other posts, but with a little more detail so I figured I would post it. After cooking, the fan and light stays on. Opening the door stops the fan, and the light remains on. As mentioned, the microwave does heat and timer works as expected. This microwave has two sets of switches (2 in an upper and 2 in a lower bracket), with one NC and one NO in each bracket. Switches tested OK, but thought that one of the brackets might somehow be responsible by not fully closing or opening a switch.
Ended up replacing the two brackets with the 4 switches with no change. At this point I think the only viable cause is a bad relay, as I can't see how it would be a transformer. I believe the control board falls under the unit's 5 year warranty (KitchenAid customer support was vague), but I would have to get an authorized KA tech to do the service and pay labor. I found the control board for $110 and wouldn't expect a tech arriving at my house to be any cheaper with their labor. I was wondering if anyone had the exact same situation (light/fan on door close and light on door open, and switches OK) where the control board was the cause.
Ended up replacing the two brackets with the 4 switches with no change. At this point I think the only viable cause is a bad relay, as I can't see how it would be a transformer. I believe the control board falls under the unit's 5 year warranty (KitchenAid customer support was vague), but I would have to get an authorized KA tech to do the service and pay labor. I found the control board for $110 and wouldn't expect a tech arriving at my house to be any cheaper with their labor. I was wondering if anyone had the exact same situation (light/fan on door close and light on door open, and switches OK) where the control board was the cause.
