Hayward HDF275 User Manual

Universal HC Series Heater ®
Troubleshooting Guide
TSG-UHC21a
Copyright 2021 Hayward Holdings

Hayward HDF275 Specifications

General

Brand	Hayward
Model	HDF275
Category	Heater
Language	English

Summary

Universal HC Series Heater Troubleshooting Guide

Safety Precautions

High Voltage Electrocution Hazard

Details the risks of high voltage and safety measures.

System Overview and Operation

Troubleshooting

Diagnostic Codes

List and description of all diagnostic codes for the HDF Heater.

Heater Not Powering Up

Troubleshooting steps when the heater does not power up.

Open FC1 or F2 Fuse

Troubleshooting steps for an open FC1 or F2 fuse.

Open F1 Fuse

Troubleshooting steps for an open F1 fuse.

Open FC4 Fuse

Troubleshooting steps for an open FC4 fuse.

Service LED ON: 'BD' Code

Troubleshooting for 'BD' code indicated by the service LED.

Service LED ON: 'EE' or 'CE' Code

Troubleshooting for 'EE' or 'CE' codes indicated by the service LED.

Service LED ON: 'IO' or 'SB' Code

Service LED ON: 'SF' or 'HS' Code

Service LED ON: 'PF' Code

Service LED ON: 'HF' Code

Service LED ON: 'LO' Code

Service LED ON: 'IF' Code

Service LED ON: 'AC' Code

Service LED ON: 'A1, A2, & A3' Code

Service LED ON: 'b1' Code

Service LED ON: 'b2' Code

Service LED ON: 'b3' Code

Service LED ON: 'b4' Code

Wiring Diagram