What It Means
Defrost Mode Active
Likely Causes
- Normal defrost cycle in cold or humid conditions
- Evaporator coil frost accumulating in marginal ambient temperatures
Next Checks
- Normal operation — heat pump will defrost evaporator coil for 5-15 minutes and resume
- No action needed if unit returns to normal heating after defrost
- If unit stays in defrost mode for more than 20 minutes, check refrigerant charge
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 AquaCal 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.