Coleman 9530-3231 Heat Pump Freeze Sensor | 9530-952
Coleman 9530-3231 Heat Pump Freeze Sensor | 9530-952 — Product description
This is the freeze sensor that keeps your Coleman heat pump honest. It reads coil temperature and feeds it to the 9530-952 control box, so the system knows when to protect the coil from icing over in cold weather. Genuine Coleman part, MPN 9530-3231. If your old sensor gave out, this is the direct replacement.
The Coleman 9530-3231 is the indoor/outdoor freeze sensor that pairs with the Coleman 9530-952 control box on Mach heat pump systems. Its job is simple but important. It reads the coil temperature and reports back to the control board, so the system knows when the coil is getting cold enough to ice up in heat pump mode.
When a freeze sensor drifts or fails, you'll usually notice it first as a heat pump that short-cycles, won't switch modes right, or throws a fault up at the thermostat. Swapping in a fresh sensor is one of the cheapest fixes on an RV rooftop unit, and it's a whole lot easier than chasing the problem all the way through the control box.
This is the genuine Coleman coil sensor package, not a generic substitute. If you're servicing a rig that runs the 9530-952 control box, it's the direct part to reach for. Match the MPN, 9530-3231, and you're set.
Key Features
- Genuine Coleman coil sensor package, MPN 9530-3231
- Designed for use with the Coleman 9530-952 control box
- Indoor/outdoor freeze sensor monitors coil temperature to guard against icing
- Direct replacement for a failed or drifting sensor on Mach heat pump systems
Why Buy from NVN Marine
- Authorized Coleman reseller, full manufacturer warranty
- NMEA member and ABYC certified, advice from real boat techs
- Same-day shipping before 3 PM ET on in-stock items
- NY headquarters and Fort Lauderdale flagship retail store
Technical specifications
| Title | Coleman 9530-3231 Indoor/Outdoor Freeze Sensor |
|---|---|
| Brand | Coleman |
| Manufacturer Part Number | 9530-3231 |
| UPC | 755790008360 |
| Sensor Type | Indoor/Outdoor Freeze Sensor |
| Compatible Control Box | Coleman 9530-952 |
| Package Contents | Coil Sensor Package |
Frequently asked questions
What does this freeze sensor do?
It reads the coil temperature and reports it to the 9530-952 control box, so your heat pump knows when the coil is getting cold enough to ice up and can react accordingly.
Which control box does it work with?
It's made for the Coleman 9530-952 control box on Mach heat pump systems. Match that box and the MPN 9530-3231 and you're good.
Is this a genuine Coleman part?
Yes. It's the genuine Coleman coil sensor package, not a generic aftermarket sensor.
How do I know if my sensor has failed?
A bad freeze sensor often shows up as a heat pump that short-cycles, won't switch modes correctly, or throws a fault at the thermostat. Replacing the sensor is a common first fix.