Blog
Pool equipment, explained
What a code, a light or a noise on your equipment pad means, checked against the manufacturer’s own documentation, what is safe to check yourself, and when it needs a technician.
$120 diagnostic, credited toward your repair · set pricing on many common repairs and installations
Heaters & heat pumps
- Hayward pool heater error codesThe diagnostic codes in Hayward's own troubleshooting guides for the Universal H-Series gas heater and the HeatPro and Summit heat pumps, what each code means, and which ones point to something you can safely check yourself.
- Pentair MasterTemp error codesThe MasterTemp shows ten fault codes, and its manual says what each means and how it clears. ERR PS is a water-flow message you can usually work through yourself; Pentair says the other nine mean the heater should be shut down and checked by a technician.
- Pool heater not heatingMost pool heaters that won't heat are refusing to run because a condition they check for isn't met, usually water flow. These are the checks Pentair and Hayward put first, which ones are safe to do yourself, and where to stop.
Something wrong right now? The repair guides start from what your equipment is doing, and the Pool Problem Finder narrows it down in a few questions.