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How to fix a Carrier Thermostat valve that doesn't open in a 2-pipe system?
If the valve on your Carrier Thermostat does not open in a 2-pipe system, it may be due to incorrect wiring or configuration. Check the configuration of Advanced Setup Step 5 to ensure it is set for a 2-pipe system. Also, verify that the water valve is wired to the Y1 terminal.
How to fix Carrier 33CS250-01 Thermostat when heating equipment tries repeatedly to turn on?
If, when using 4 wires (R, G, W, Y), the heating equipment tries repeatedly to turn on but cannot with your Carrier Thermostat, it means there isn't enough power available. To fix this, connect a 270-ohm, 10-watt power resistor at the air-conditioning equipment between terminals Y and C (non-heat pump applications only).
How to fix Carrier 33CS250-01 Thermostat when cooling equipment tries repeatedly to turn on?
If, when using 4 wires (R, G, W, Y), the cooling equipment tries repeatedly to turn on but cannot with your Carrier Thermostat, it means there isn't enough power available. To fix this, connect a 270-ohm, 10-watt power resistor at the air-conditioning equipment between terminals W and C (non-heat pump applications only).
What to do if my Carrier 33CS250-01 shows 99 F?
If the thermostat temperature display rises to 99 F, check the wiring and power supply.
What to do if the display on my Carrier 33CS250-01 is not illuminated?
Check for 24 vac at the R terminal connection. The R terminal must be connected for the thermostat to operate properly.
How to troubleshoot a Carrier Thermostat with a blank LCD display?
To troubleshoot a Carrier Thermostat with a blank LCD display, check for 24 vac between R and C at the terminal connections. Both R and C must be connected for proper thermostat operation.
Why does my Carrier Thermostat display a large set point instead of the room temperature?
If your Carrier Thermostat displays a large set point instead of the room temperature, it means the thermostat is set to a single set point instead of a dual set point. This setting can be adjusted in Advanced Setup Step 4.
How to fix a Carrier 33CS250-01 display that only shows the clock?
If your Carrier Thermostat display only shows the clock, this setting is configured in Advanced Setup Step 3. To resolve this, change the Display Blanking configuration to Off.
Why is my Carrier Thermostat displaying '--'?
If your Carrier Thermostat is displaying '--', it indicates that the temperature sensor reading is out of range. Check the sensor for damage and inspect the sensor wiring. Try cycling power to the thermostat. If the display doesn't clear, replace the thermostat.
How to reset the clean filter message on a Carrier 33CS250-01?
To reset the 'Clean Filter' message on your Carrier Thermostat, press the Reset Filter button to reset the blower operation timer to 0 hours.
General| Brand | Carrier |
|---|---|
| Model | 33CS250-01 |
| Category | Thermostat |
| Language | English |
