Hayward HDF400 Troubleshooting Guide

High Voltage Electrocution Hazard
Hazardous voltage can shock, burn, cause serious injury
and or death. To reduce the risk of electrocution and or
electric shock hazards:
• Turn off power to unit before making repairs
• Only qualified technicians should service heater
• Replace damaged wiring immediately
• Ensure appliance is properly grounded and bonded
2
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Warning
Safety Precautions

Hayward HDF400 Specifications

General

Model	HDF400
Category	Gas Heater
BTU Input	400, 000 BTU
Fuel Type	Natural Gas or Propane
Heat Exchanger	Cupro-Nickel
Efficiency	84%
Ignition System	Electronic
Warranty	1 year