Hayward H300FDN Troubleshoot Manual

HxxxFD(N/P)ASME
Universal H Series Heaters
Troubleshooting Guide
HxxxFD(N/P)
TSG-UHS16b
Copyright 2017 Hayward Industries Inc.

Hayward H300FDN Specifications

General

Model	H300FDN
Category	Heater
Fuel Type	Natural Gas
BTU Output	300, 000 BTU
BTU Input	300, 000 BTU
Efficiency	84%
Type	Pool Heater
Heat Exchanger Material	Cupro Nickel
Ignition Type	Direct Spark

Summary

Safety Precautions

Troubleshooting

Diagnostic Codes

Lists and describes diagnostic codes for the UHS Heater.

Troubleshooting Part Numbers

Heater Not Powering Up

Troubleshooting steps for when the heater does not power on.

Open FC1 &/or F2 Fuse

Open FC3 &/or F1 Fuse

Open FC4 Fuse

Service LED ON: 'BD' Code

Troubleshooting steps for the 'BD' service code.

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

Guide for resolving 'EE' or 'CE' service codes.

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

Troubleshooting steps for 'IO' or 'SB' service codes.

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

Troubleshooting guide for 'SF' or 'HS' service codes.

Service LED ON: 'PF' Code

Steps to resolve the 'PF' service code.

Service LED ON: 'HF' Code

Troubleshooting guide for the 'HF' service code.

Service LED ON: 'LO' Code

Steps to troubleshoot the 'LO' service code.

Service LED ON: 'IF' Code

Service LED ON: 'AC' Code

Service LED ON: 'AO' Code