Midea Minibar MS-50 (50L) Malfunction
Symptoms:
- Suddenly not cold and ice started melting.
- Suspect either PTC Relay / Overload / both of them spoilt
Photos:
- Front view of Minibar
- Back view (top) with Electric Diagram
- Back view (bottom) with compartment for compressor
- Unscrew 3 screws in order to remove to cover
- After unscrewed, you may remove the cover
- Remove the GND wire
- Remove the PTC Relay
- Remove the Overload
- Check the PTC Relay using multimeter (Good: Close to 0Ω, NG: Open Loop)
- Check the Overload using multimeter (Good: Close to 0Ω, NG: Open Loop)
- Dismantle the PTC Relay, found the round plate inside already broken
- Check suitable PTC Relay for replacement (12Ω to 33Ω)
- Check suitable PTC Relay type. I choose 1-Pin 22Ω
- Check the new PTC Relay using multimeter (Reading: 19.4Ω)
Costs Involved:
- PTC Relay (1-Pin 22Ω): US$1.50 to US$2.50