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this moisture indicator is specifically rated for a 680 psig maximum working pressure
verify 24V at the base heater terminals
Use of sealant on the flare face is not recommended
While light oxidation can sometimes be removed with a fine abrasive
Carrier LH33ZS004 Hot Surface Ignitor this moisture indicator is specificallyThe Carrier LH33ZS004 Hot Surface Ignitor is a critical OEM furnace replacement part engineered for precise ignition in Carrier, Bryant, Payne, and Day & Night induced combustion systems. This silicon carbide ignitor provides consistent thermal performance and serves as the direct factory authorized replacement for several legacy part numbers, including LH33ZS001, LH33ZS002, LH33ZS003, 331930 751, and 41 409. When troubleshooting a furnace that fails