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How do I fix my Rheem P1 error code?

Alton Alexander
By Alton AlexanderUpdated on June 4th, 2022

The rheem p1 code is an error code that indicates that the water heater is not heating the water to the correct temperature. This can happen for a number of reasons, including a faulty thermostat, a broken heating element, or a clogged water heater. If you see this code, it's important to call a plumber or water heater technician to come and take a look at your water heater.

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1. Check the thermostat to see if it is set too low

  1. Verify that the thermostat is physically on.
  2. Verify that the thermostat is set to the proper temperature.
  3. Verify that the HVAC unit is properly installed and in service.
  4. Verify that the ductwork is properly installed and in service.
  5. Verify that the refrigerant charge is correct.
  6. Verify that the coil is properly installed.
  7. Verify that the wiring is properly installed.
  8. Verify that the thermostat is properly wired.

2. Check the furnace filter and clean or replace it if necessary

  1. Turn off the power to the furnace.
  2. Open the cover to the furnace.
  3. Locate the furnace filter.
  4. If the filter is dirty, replace it.
  5. Close the cover to the furnace.
  6. Turn on the power to the furnace.

3. Check for any blockages in the venting system

-Remove all the furniture from around the furnace and check for any obstructions in the venting system. -If the obstruction is found, use a vacuum cleaner to clear the obstruction. -Check to see if the furnace is receiving enough airflow. If it is not, open the registers on the furnace and adjust them as necessary. -Replace any obstructions in the venting system with new pieces of tubing. -Check the furnace to see if the problem has been fixed.

4. Have a professional service the furnace

  1. Open the furnace’s access panel.
  2. Remove the dust cover on the furnace blower.
  3. Remove the screws that hold the blower in place.
  4. Disconnect the blower motor wire.
  5. Remove the blower motor.
  6. Clean the motor shaft and the fan blade. 7.ubricate the motor shaft with a light oil.
  7. Replace the blower motor.
  8. Connect the blower motor wire.
  9. Replace the dust cover on the furnace blower.