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Pentair ETi 400 Heater Replacement Parts Diagram

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45 parts · 2 with cheaper aftermarket options. Tap a number on the diagram, or search by part number.

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    • Not sold online Pentair air pressure switch 475987Call us and we'll get it for you.
    • Not sold online Pentair condensate assembly / float switch 475980Call us and we'll get it for you.
    • Not sold online Pentair heat exchanger screws 475606Call us and we'll get it for you.
    • Not sold online Pentair plug assembly, 120/240V 475979Call us and we'll get it for you.
    • Not sold online Pentair tridicator gauge 475603Call us and we'll get it for you.
    • Not sold online Pentair heater gasket kit 475973Call us and we'll get it for you.
    • Not sold online Pentair gas side panel 475608Call us and we'll get it for you.
    • Not sold online Pentair water manifold panel 475609Call us and we'll get it for you.
    • Not sold online Pentair control board panel 475610Call us and we'll get it for you.
    • Not sold online Pentair latch assembly 475611Call us and we'll get it for you.
    • Not sold online Pentair inlet plumbing assembly 475613Call us and we'll get it for you.
    • Not sold online Pentair exhaust assembly 475617Call us and we'll get it for you.
    • Not sold online Pentair pressure relief valve 475618Call us and we'll get it for you.
    • Not sold online Pentair control cover 475619Call us and we'll get it for you.
    • Not sold online Pentair vent cap, exhaust 475620Call us and we'll get it for you.
    • Not sold online Pentair vent socket 475622Call us and we'll get it for you.
    • Not sold online Pentair TitanTough heat exchanger 475623Call us and we'll get it for you.
    • Not sold online Pentair burner 475624Call us and we'll get it for you.
    • Not sold online Pentair gas control valve replacement kit 476001Call us and we'll get it for you.
    • Not sold online Pentair 3/4 in. gas union 38404-4097SCall us and we'll get it for you.
    • Not sold online Pentair manifold-enclosure fasteners 476003Call us and we'll get it for you.
    • Not sold online Pentair flame sensor 462023Call us and we'll get it for you.
    • Not sold online Pentair burner assembly 476059Call us and we'll get it for you.
    • Not sold online Pentair base door, gas side 476101Call us and we'll get it for you.
    • Not sold online Pentair base door, control side 476102Call us and we'll get it for you.
    • Not sold online Pentair heat exchanger union adapters kit 476106Call us and we'll get it for you.

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Also fits your Pentair ETi 400 Heater

Not shown on the diagram, but made for this pump.

Fit guide

ETi 400 parts at a glance

Item numbers and part numbers come from Pentair's ETi 400 Heater replacement parts list. Some items appear on more than one drawing (for example 11 gaskets and 44 fasteners).

Sensors and switches

Stack flue sensor blue, item 7
475601
Thermal fuse white, item 6
475998
Automatic gas shut-off switch 150°F
475985
Water sensor thermistor item 28, not shown
42001-0053S
High limit switch
42001-0063S

Boards

Heater control board item 47
475975
Fan control board item 1
475978
Ignition control module item 48
475976

Not shown on the drawing

Wire harness item 5
475996
Spark electrode cables item 9
475982
Air intake kit item 17
475971
Drain plug item 42
U178-920PZ
Hold down bracket kit item 45
476004
Propane gas orifice kit item 46
476072