Pentair High Pressure Switch for UltraTemp 220 ETi Heat Pumps | 473744Z
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- SKU:
- 473744Z
-
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About This Item
OEM High Pressure Switch for the Pentair UltraTemp ETi Heat Pump
The Pentair 473744Z is the OEM replacement high pressure switch for the UltraTemp 220 ETi heat pump. This switch is a critical safety and operational component within the heat pump's electrical system, protecting the refrigerant circuit from over-pressure conditions.
⚠️ 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 high pressure switch monitors refrigerant circuit pressure within the UltraTemp 220 ETi heat pump. When pressure exceeds the rated threshold, the switch interrupts operation to prevent compressor damage and protect the refrigerant circuit. A failed or faulty high pressure switch can cause nuisance shutdowns or, if stuck closed, allow the compressor to operate under unsafe pressure conditions — both warrant immediate replacement with this OEM part.
Specifications
| Pentair Part Number | 473744Z |
| Part Name | Switch, High Pressure |
| Quantity Included | Each |
Fits Into
| Brand | Equipment Line | Model / Part Number | Notes |
| Pentair | UltraTemp 220 ETi — UltraTemp ETi Series | 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, confirm the part number printed on your existing switch matches 473744Z. High pressure switches can vary by refrigerant type and pressure rating — installing the wrong switch can result in nuisance trips or, more critically, failure to protect the compressor. If your UltraTemp is displaying a high pressure fault code, also verify that airflow across the condenser coil is unobstructed before replacing the switch — a restricted coil is a common root cause of high pressure faults that a new switch alone will not resolve.
