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Insignia Refrigerator NS-RTM18SS7 Electrical Issue

eaglelee14

Premium Member
Joined
Jun 23, 2022
Messages
2
Location
los angeles, ca
Model Number
NS-RTM18SS7
Age
1-5 years
Hello,

New to this forum but hoping to gain some insight into how to repair my Insignia NS-RTM18SS7 refrigerator.

Basically has been running fine for 1.5 years, but then recently there have been electrical system issues. The inside temperature adjustor light goes out - and that seems to coincide with the compressor not powering on to cool the fridge.

The inside illumination light works, but the compressor never turns on.

I have changed the relay/overload, but then the compressor did not even start, it clicked intermittently. I smelled a plastic burning smell from the overload when I removed it.

After using the old overload and new relay, the inside temp. adjustor light comes on, and the compressor works for about 1 - 3 hours, but then the same issue reappears.

I see a couple of solutions:

1. Find a complete match overload - which I have not found easily
2. Install a new hard-start kit - which I don't know if that's the problem
3. Install a new control board - which could be the solution but hard to source as well

Any help would be greatly appreciated.

Thank you!
 

eaglelee14

Premium Member
Joined
Jun 23, 2022
Messages
2
Location
los angeles, ca
Pic #1 - Overload
Pic #2 - Circuit Diagram
Pic #3 - Relay
Pic #4 - Compressor
 

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Jake

Appliance Tech - Admin
Staff member
Joined
Aug 24, 2004
Messages
132,647
Location
Redmond, Oregon
The inside temperature adjustor light goes out - and that seems to coincide with the compressor not powering on to cool the fridge.
Yes, to me that sounds like the control board is the problem. If you take a voltage reading at the compressor start relay you should be getting 120 volts when the compressor should still be running.

(click to enlarge)
Compressor Testing 2.jpg

Jake
 
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