Whitfield Low Limit Ceramic Switch (140F): 12057601-AMP

Lennox

• Cascade

Whitfield

• Advantage I
• Advantage II INS
• Advantage II
• Advantage II-T C
• Advantage II-T
• Advantage III
• Advantage Plus FS
• Advantage Plus INS
• Cascade
• Legend
• Prodigy 1
• Prodigy 2
• Profile 30 INS
• Quest FS WP4
• Quest INS WP4
• Quest Plus FS WP4
• Quest Plus INS WP4

Instructions for Installing Low-Limit Switch Part # XP3004-1, 12057601-AMP (140°F-20 low-limit switch):

This switch uses 1/4" spade connectors at the switch, previous OEM versions of this switch use fork terminals. The wires from your stove will need to be cut and fitted with 1/4" spade disconnects to use this switch which are not included.

Lennox: Elite Montage/ IHP IronStrike 32FS

Whitfield: Advantage, Cascade, Legend, Quest, Renaissance or Prodigy II:

• To replace this switch, locate the side of the stove where the combustion blower is mounted. The switch is located on the exhaust blower housing.
• Make sure that your stove is unplugged.
• Using a flat head screw driver, loosen the two contact points for the wires and remove the two fork connectors. using a 1/4" socket wrench, remove the two hex screws that hold the switch to the housing.
• If your new switch does not have screws for connecting the wires, use the screws from the old switch.
• Install the new switch to the housing. Reconnect your wires. It does not matter which wire goes on which terminal.

**Note: Not all Whitfield pellet stoves used a low-limit switch for detecting proof of fire: Profile 20, Profile 30, and Optima units made by Lennox used a "photo-eye", part # 14750404

How Low-Limit Switch, part #XP3004-1, 12057601-AMP (140°F-20 lLow-Limit Switch) operates:

Switch should be a normally open circuit that closes at 140°F, opens again at fall in temp 140°F-20°F or 120°F. This switch is mounted in the air path of the exhaust and is commonly not malfunctioning but just dirty on the face of the switch. If your wire contacts wiggle a little on the switch, this may actually be okay and is common. A bad switch can be determined by heating the switch face directly with the flame of a match or lighter. After a moment you will hear the switch click. After you hear the click test the switch across the terminals for continuity. If there is no circuit present and you have determined that the switch face is over 140°F, replace the switch. Also, if the switch face is <140°F but still has a circuit, also replace the switch.

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