The R13 error code on a Pentair heater indicates that the unit is not receiving proper voltage from the power source. This can happen for a variety of reasons, including a tripped circuit breaker, loose wiring, or a faulty power cord. If the R13 error code persists, it is recommended that the unit be checked by a qualified technician.
Contents:
- Check the error code chart in the Pentair Heater Owner's Manual to identify the meaning of the error code
- If the error code is caused by a dirty filter, clean or replace the filter
- If the error code is caused by a dirty sensing bulb, clean the sensing bulb
- If the error code is caused by low water flow, increase the water flow to the heater
1. Check the error code chart in the Pentair Heater Owner's Manual to identify the meaning of the error code
- Open the Pentair Heater Owner's Manual.
- Find the error code chart and locate the code for your heater.
- Determine the meaning of the error code.
- Fix the problem that caused the error code to appear.
2. If the error code is caused by a dirty filter, clean or replace the filter
If the error code is caused by a dirty filter, clean or replace the filter in order to fix pentair heater error code r13.
3. If the error code is caused by a dirty sensing bulb, clean the sensing bulb
- Remove the sensing bulb from the unit.
- Clean the surface of the sensing bulb with a cloth or a vacuum cleaner.
- Replace the sensing bulb.
- Reconnect the power supply to the unit.
- Test the unit.
4. If the error code is caused by low water flow, increase the water flow to the heater
- Check the water flow by turning off the water supply to the heater, and then measuring the flow rate with a gauge.
- If the water flow is low, increase the water flow to the heater by turning on the water supply to the heater, and then measuring the flow rate.
- If the water flow still is low, then the water flow to the heater may be blocked, and the pentair heater error code r13 may be caused by low water flow. In this case, you may need to replace the water flow meter.
If the answers above didn't work then you should also try:
- If the error code is caused by high water temperature, decrease the water temperature.
- If the error code is caused by a tripped circuit breaker, reset the circuit breaker.
- If the error code is caused by a loose wire connection, tighten the wire connection.
- If the error code is caused by a faulty component, replace the component.