SplashLens / Pentair / MasterTemp / Max-E-Therm Gas Heater

Pentair HI: High Temperature — Setpoint Reached

Pentair HI reference for MasterTemp / Max-E-Therm Gas Heater: likely causes, next checks, and manual-verification reminders for pool service techs.

Pentair MasterTemp / Max-E-Therm Gas Heater LOW

What It Means

High Temperature — Setpoint Reached

Likely Causes

Next Checks

  1. Normal shutdown — not an error
  2. If pool is too hot, lower setpoint

Verify Before Repair

SplashLens is a field reference, not a repair guarantee. Confirm the visible code, exact model, and current manufacturer procedure before replacing parts, bypassing safeties, or quoting a customer.

SplashLens is independent and is not affiliated with Pentair or other equipment manufacturers.

Use SplashLens At The Pad

Manual error-code lookup works after the app has loaded once. AI scan features require internet and should be treated as a second set of eyes.