Samsung Air Conditioner Error Code 37

Error code 37 on a Samsung air conditioner indicates a heatsink temperature sensor fault on the IPM (Intelligent Power Module). The IPM monitors its own heatsink temperature to prevent overheating, and this code triggers when the control board receives an abnormal signal from that sensor. The unit shuts down as a protective measure. The first diagnostic step is to inspect solder joints at PIN #24 and PIN #25 of the IPM module.

No. Error code 37 causes the unit to shut down automatically, and attempting to force it to operate without resolving the fault is not recommended. The IPM heatsink sensor is a protection feature, and bypassing or ignoring this fault could result in the IPM overheating and failing, potentially causing additional damage to the inverter circuitry.

Repair costs vary depending on the root cause. If the fix is resoldering cracked joints at the IPM pins, labor costs alone may range from around $75 to $150. If the IPM module itself has failed and needs replacement, parts and labor combined can range from $200 to $500 or more depending on the specific unit model and local labor rates. A control board replacement, if required, falls in a similar range.

A knowledgeable DIYer comfortable with electronics can inspect the IPM module's solder joints at PIN #24 and PIN #25 for visible cracking or bridging, and reflow suspect joints with a soldering iron. However, working inside an air conditioner inverter board involves high-voltage capacitors that can retain a dangerous charge even after power is disconnected. If you are not experienced with high-voltage electronics, this repair is best left to a qualified technician.

A power reset may temporarily clear the displayed code, but if the underlying fault in the sensor circuit or solder joints is still present, the error will return shortly after the unit restarts. The fault needs to be diagnosed and repaired at the hardware level before the system will operate reliably without re-triggering the code.