
Quick overview
- Genuine Pentair Factory kit 475985, listed for the ETI 400.
- Rated 150F This is the 150F version, so match the rating on the switch you are taking out.
- ETI 400 specific Pentair lists it as the AGS 150F replacement for the ETI 400 heater.
- Safety circuit The gas shut off switch is part of the chain that stops gas flow when the heater runs outside its limits.
- Supplied as a kit Pentair sells it as a replacement kit rather than as a bare switch.
- Heater will not fire A failed shut off switch is one of the first things to check when an ETI 400 refuses to light.
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Product details
Pentair 475985 is the gas shut off switch replacement kit for the ETI 400 heater, rated at 150F. Pentair also lists it as the ETI 400 AGS 150F replacement.
What it does
The gas shut off switch sits in the heater safety chain. If conditions move outside the range the heater is allowed to run in, the switch opens and gas flow stops. That is a design that fails safe, which means a switch that has failed leaves the heater dead rather than dangerous.
Before you order
Check the rating marked on the switch you are removing. This is the 150F kit, and heater safety switches are built in several ratings. If the heater is not firing, the stack flue sensor, the thermal fuse and the control board are the other ETI 400 parts in the same circuit worth eliminating before you settle on this one.
| Brand | Pentair |
|---|---|
| Manufacturer part number | 475985 |
| UPC | 788379878078 |
| Type | Gas shut off switch replacement kit |
| Rating | 150F |
| Fits | Pentair ETI 400 heater |
| Also listed as | ETI 400 AGS 150F replacement kit |
| Shipping weight | 0.06 lb |
| Ships | Parcel |
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