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ONLY USE GENUINE HAYWARD REPLACEMENT PARTS
51300803801 REV B
SERVICE PARTS LIST
The following repair parts are available from Hayward and through your local distributor. When ordering parts, include the complete pool heater
model number listed on the unit’s rating plate, located near the junction boxes on the exhaust side of the heater. (Example: HDF400)
All ser-
vice must be performed by a qualified technician.
CABINET PARTS
Control Access Panel
Cabinet Top
Header Controls Cover
Water Side Trim Panels
Cabinet Base
ELECTRONIC CONTROLS
Ignition Control Board
Display Board and Ribbon Cable
Field Wiring Panel (Fuse Board)
Inlet Water Thermistor
Water Pressure Switch
High Temperature Limits
Exhaust Temperature Limit
Differential Pressure Switch
Transformer
Ignitor and Flame Sensor
Voltage Selector Jumper
Fuses
Wiring Harnesses
Electrical Accessory Kit
HEATING COMPONENTS
Blower
Fuel/Air Mixers (Natural or LP)
Burner
Gas Valve
Gas Manifold
Complete Combustion Chamber
Exhaust Box Assembly
Exhaust Pipe Assembly
WATER MANIFOLD COMPONENTS
V-Header Assembly
Inlet/Outlet Header Assembly
Union Flange Kit
Pressure Relief Port Plug
Drain Plug
MISC. KITS
Blower & Burner Gasket Kit
Silicone Tubes for Pressure Switch and Valve Reference
Header O-Ring Kit