Hayward HP50HA2 User Manual

Hayward HP50HA2

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USE ONLY HAYWARD GENUINE REPLACEMENT PARTS

51300022501 RevE

Hayward Industries

1415 Vantage Park Dr., Suite 400

Charlotte, NC 28203

Phone: (908) 355-7995

www.hayward.com

HP50HA2/HP70HA2 Heat Pump

Installation and Operation Manual

HP50HA2

HP70HA2

Contents

Safety Instructions...............1

Getting Started....................2

Installation..........................9

Water Piping.......................11

Electrical Connections........14

Check Out & Start-Up..........16

Maintenance & Service.......24

Troubleshooting................26

Above Ground & In Ground Pool/Spa Heater

Table of Contents

Questions and Answers:

D
davidbryantJul 29, 2025
How to troubleshoot a Hayward HP50HA2 that is not operating?
- G
  grahamdeannaJul 30, 2025
  If your Hayward Heat Pump isn't operating, first ensure the power is on and check the breaker. If tripped, reset it. Make sure the thermostat is set high enough for the unit to turn on, and that the 3-minute compressor delay has passed. Check for low water flow by ensuring the filter is clean, the filter pump is on, and cleaning devices are unhooked. Also, verify the outside temperature is within the operating range. If the fan isn't working, call for service.
S
Susan FieldsAug 5, 2025
What to do if the Hayward HP50HA2 is running but Display LEDs are not on?
- S
  Sandra ThompsonAug 5, 2025
  If the display LEDs on your Hayward Heat Pump are not on while the unit is running, this indicates a system component failure, and you should call for service.
L
Luis StephensAug 10, 2025
Why does my Hayward HP50HA2 run continually?
- A
  Allen BowersAug 10, 2025
  If your Hayward Heat Pump runs continually, the thermostat might be set too high for the ambient temperature; try turning it down. The evaporator could be dirty; clean it by running tap water over the coil without any nozzle attachment. Avoid using pressurized water. If these steps don't help and you suspect an electrical component failure, turn off the pump. If the unit continues running after 3 minutes, turn off the power and call for service.
V
Vincent JenkinsAug 16, 2025
What to do if water is coming from the bottom of my Hayward HP50HA2 Heat Pump?
- A
  Amanda WarrenAug 16, 2025
  If water is coming from the bottom of your Hayward Heat Pump, it might be condensation, which is normal. However, to check for a possible water leak, turn the unit off for several hours but leave the filter pump running. If the water quantity decreases, it's likely just condensation; otherwise, a leak might be present.
C
carterrobertAug 22, 2025
Why is my Hayward HP50HA2 cycling (on / off too quickly)?
- A
  Austin StevensAug 22, 2025
  If your Hayward Heat Pump is cycling on and off too quickly, ensure sufficient water flow by checking if the filter pump is running continually. If the cycling continues, turn the unit off to prevent compressor damage. Also, inspect the evaporator coil for severe frost, which could indicate low refrigerant, low ambient temperature, or high humidity with low ambient temperature. If cycling persists, turn the unit off and call for service.

Hayward HP50HA2 Specifications

General

Brand	Hayward
Model	HP50HA2
Category	Heat Pump
Language	English

Summary

Safety Instructions

READ AND FOLLOW ALL INSTRUCTIONS

Basic safety precautions and hazard awareness symbols are explained.

Suction Entrapment Hazard Warning

Electrical Safety and Grounding

Guidelines for safe electrical wiring, grounding, bonding, and avoiding shock hazards.

Pool & Spa Usage Safety

Operation and Controls

Check-Out and Start-Up Procedures

Steps to ensure proper functioning after installation and before initial use.

Setting Temperature and Modes

Maintenance & Service

Water Chemistry Requirements

Critical guidelines for water chemistry to prevent heat exchanger damage.

Seasonal Procedures

Troubleshooting Guide

Problem Diagnosis and Solutions

A chart to diagnose common problems and their potential solutions.

Error Code Reference

Reference for error codes displayed on the controller and their remedies.

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