The Pentair Fan Relay (473150Z) is the OEM replacement electrical relay for the ThermalFlo HP Titanium heat pump series and the UltraTemp 220 ETi heater.
⚠️ IMPORTANT: LICENSED PROFESSIONAL INSTALLATION REQUIRED
Gas and electrical heater components must be serviced by a licensed pool professional or qualified HVAC technician. Do not attempt to service gas or high-voltage components without proper certification.
The fan relay controls the condenser fan motor circuit in the heat pump, switching fan operation on and off in response to control board signals. A failed relay can result in the condenser fan running continuously, failing to start, or the unit shutting down on a high-pressure fault. Replacing this relay restores proper fan cycling and protects the refrigerant circuit from thermal stress.
Specifications
| Pentair Part Number |
473150Z |
| Part Name |
Fan Relay |
| Part Category |
Electrical Components |
| Quantity Included |
Each (1) |
Fits Into
| Brand |
Equipment Line |
Model / Part Number |
Notes |
| Pentair |
ThermalFlo HP Titanium |
500 |
— |
| Pentair |
ThermalFlo HP Titanium |
700 |
— |
| Pentair |
ThermalFlo HP Titanium |
900 |
— |
| Pentair |
ThermalFlo HP Titanium |
1200 |
— |
| Pentair |
ThermalFlo HP Titanium |
1200R |
— |
| Pentair |
UltraTemp 220 ETi |
ULTRATEMP 220 ETi |
Electrical System |
Compatibility is based on Pentair parts documentation and available OEM records. This is not an exhaustive list. For certainty, verify the part number in your equipment's manual or on the original part itself before ordering.
Pro Tip
Before ordering, locate the relay on your unit's control board and confirm the part number printed on the relay body matches 473150Z. Fan relays can vary between production runs of the same equipment model — matching the number on the original component is the most reliable confirmation. Have a licensed technician perform the replacement; the control enclosure contains mains-voltage wiring that must be de-energized and locked out before any component is handled.
