Pool Heater Short Cycling in San Diego
A heater that fires then quits after a minute usually has a flow, pressure-switch, or high-limit fault rather than a dead unit. Below: the likely causes, what you can safely check, the typical fix cost, and a link to local help in your city.
Likely causes
- Low water flow tripping the high-limit or pressure switch
- A dirty filter or closed valve restricting flow
- A failing thermal regulator or flow sensor
- Scale in the heat exchanger from hard water
- A venting or airflow problem on the burner
What to check first
- Confirm the pump runs strong and the filter is clean
- Open any valves that feed the heater fully
- Note the error code when it shuts down
- Check for debris blocking the heater intake or vent
Get local help by city
Pick your city for the causes most common there, local fix costs, and same-week service.
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Common questions
Why is my pool showing a pool heater that keeps shutting off in San Diego?
A heater that fires then quits after a minute usually has a flow, pressure-switch, or high-limit fault rather than a dead unit. The most common causes are low water flow tripping the high-limit or pressure switch and a dirty filter or closed valve restricting flow. A technician confirms it on site.
What does it cost to fix?
Across San Diego County, this repair usually runs $250 to $1,400 depending on the failed part. Your city page has the local range.
Is the diagnosis free?
Yes. A pro in the Refresh Pool Pros network will diagnose it and quote the fix in writing before any work starts. Call (858) 400-4598.
Get a free San Diego diagnosis
Call and we will connect you with a pool pro who finds the cause and quotes the fix in writing.