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AquaCal Heat Pump DIY Troubleshooting Guide

✅ TRY THESE FIRST

 

✅ Make sure the pool circulation pump is running

✅Set circulation pump to run continuously to heat a cold pool

✅ Clean or backwash the filter, for flow or HP errors

✅ Empty skimmer and pump basket, for flow or HP errors

✅ Verify all valves are in the correct position and flow is not bypassing Heat Pump

✅ Turn the heat pump breaker OFF for 10 seconds, then back ON

Common Problems

Problem

What To Check

Try This ✅

Submit Service Request on Customer Portal 🔧

Won't turn on

Breaker, display, pump

✅ Reset breaker

🔧 Blank display or breaker keeps tripping

Won't heat

Temp setting, filter, flow

✅Raise temperature, extend run time, check for cold air discharge

🔧 Water never warms

FLO error

Water flow

✅ Clean filter and baskets

🔧 FLO remains

HP error

 

✅ Clean filter baskets and strainer. Increase pump speed

🔧 Error returns

Water too hot

Settings, other heaters

✅ Lower set point

🔧 Error repeats

Heating slowly

Weather, cover

✅ Increase run time/use cover

🔧 Performance suddenly drops

Repeated shutdowns

Error code

✅ Reset unit

🔧 Same error returns

Breaker trips

Electrical supply

⚠️ Reset once

🔧 Trips again

Common Error Codes

 

Code

Meaning

Action

FLO

Low water flow

✅ Clean filter, baskets, verify pump

HP

High pressure

✅ Check airflow and clean coil

LP

Low pressure

🔧 Contact service

HP5

High pressure lockout

🔧 Contact service

LP5

Low pressure lockout

🔧 Contact service

High Water Temp

Water too hot

✅ Lower set point

Sensor Errors / OTA

Internal sensor issue

🔧 Contact service

Communication Errors

Control issue

🔧 Contact service

⚠️ Login to the Portal > Register Your Product > Submit Service Request

🔧 Breaker repeatedly trips

🔧 HP5 or LP5 errors

🔧 Sensor errors

🔧 Refrigerant-related errors

🔧 Electrical or communication errors

🔧 Burning smell or smoke

🔧 Water inside electrical compartments

Keywords: Heat Pump, DIY, Troubleshooting, Guide, Circulation, HP Error, Skimmer, Pump Basket, Valve, FLO, Won't Heat, Heating Slowly, Breaker, HP, LP, HP5, LP5, High Water Temp, Sensor Error, Communication Error, OTA