Raypak H000078 low pressure switch for heat pump pool heatersRaypak H000078 Low Pressure Switch for 2350, 3350, 4350, 5350, 6350 and 8350 Heat Pumps In stock$6999
Raypak H000078 low pressure switch for heat pump pool heaters

Raypak H000078 Low Pressure Switch for 2350, 3350, 4350, 5350, 6350 and 8350 Heat Pumps

Ask a questionMPN H000078
$6999
In stock

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Quick overview

  • Genuine Raypak The OEM H000078 switch, not a generic pressure switch.
  • Six models covered Fits the 2350, 3350, 4350, 5350, 6350 and 8350 heat pump pool heaters.
  • Refrigerant side safety The low pressure switch is what stops the compressor when suction pressure falls too far.
  • A common lockout cause Heat pumps that shut down and flag a low pressure fault often have a failed switch rather than a real refrigerant problem.
  • Direct replacement Swaps for the original switch on the same models.
  • Protects the compressor Restoring the switch puts the heat pump back behind its factory protection.
Full description and specifications ↓

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Product details

The Raypak H000078 is the OEM low pressure switch for the 2350, 3350, 4350, 5350, 6350 and 8350 heat pump pool heaters. It is a small part with an outsized job.

What it protects

A heat pump moves heat with a refrigerant circuit, and running the compressor with too little suction pressure damages it. The low pressure switch sits on that side of the circuit and opens the control path before the pressure gets there, shutting the unit down instead of letting it grind on.

When to replace it

Repeated low pressure lockouts are the usual reason people arrive at this part. The switch itself can fail and report a fault that is not real. Before you swap it, it is worth having the actual refrigerant pressures read, because a true low charge is a leak that needs finding, not a switch.

Specifications
Brand Raypak
Manufacturer part number H000078
UPC 840891030324
Type Low pressure switch
Part type Pool heater part
Fits Raypak 2350, 3350, 4350, 5350, 6350 and 8350 heat pump pool heaters
Ships Parcel

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Questions and answers

What people ask about this product, answered by our pool techs.

Which heaters does this switch fit?
The Raypak 2350, 3350, 4350, 5350, 6350 and 8350 heat pump pool heaters.
What does the low pressure switch do?
It watches the low side of the refrigerant circuit and shuts the compressor down if suction pressure drops below the safe limit.
My heat pump keeps showing a low pressure fault. Is this the fix?
It can be. A failed switch reports a fault that is not there. Have the actual refrigerant pressures checked before deciding, because a genuine low charge needs a different repair.
Is it an OEM Raypak part?
Yes. It is the Raypak replacement, part number H000078.
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