Why is my Toshiba HWS-1403XWHM3-E not heating or cooling properly?
- SStephanie RossAug 20, 2025
There are several reasons why your Toshiba Heat Pump might not be heating or cooling effectively. It could be due to an incorrect remote controller setting, so check your operation and temperature settings. An incorrect function code setting could also be the cause; verify the function code setting using the function code table. Other potential issues include a disconnected backup heater (check the heater and bimetal thermostat), insufficient capacity (check the equipment selection), or a sensor defect (ensure the temperature sensor is correctly positioned).