S1-02526908000 – FUSE LINK

York / Coleman / Evcon OEM thermal fuse link. Johnson Controls does not publish public specification sheets or cross-references for its York and Source 1 service parts, so no temperature rating, set point or amperage is listed here. Parts in this group are safety controls – match the part number exactly rather than substituting by appearance, and confirm the rating stamped on the original before installing.

Specifications from our own stock records. The manufacturer does not publish a public page for this item.

Before you order

Source 1 describes this as “Fusible Link, Control, Rollout.” It is a one-shot, non-resettable device — if it has opened, something caused a rollout and that cause needs finding before the link is replaced. Always match the full model and serial number on your unit before ordering.

Specs

• OEM brandYork / Coleman / Evcon (Johnson Controls)
• Part numberS1-02526908000
• Product typeThermal fuse link
• Temperature / set point ratingNot published by the OEM - read the marking on the part
• Electrical ratingNot published by the OEM
• Availability noteCurrent OEM service part
• Data SourceOTP stock record - not manufacturer-verified

Fits these models

• P2UDD10N05701C
• P2UDD10P05701C
• P2UDD12N07601C
• P2UDD16N07601C
• P2UDD16N11401A
• P2UDD20N09501C
• P2UDD20N13301C
• P1UDD10N05701B
• PANU-LD10N060B
• PANU-LD16N120A
• PBNU-LD10N060D
• PBNU-LD12N080A
• PBNU-LD12N080C
• PBNU-LD12N080D
• PBNU-LD12P080D
• PBNU-LD20N140D
• DAUC-W036N050A

What kind of fuse is on my control board?

On most furnaces and air handlers it is a 3 amp or 5 amp automotive blade fuse protecting the 24 volt side. Match the printed amp rating exactly. That fuse is sized to the transformer, not to how badly you want the equipment to run.

It blew again as soon as I replaced it. What am I looking for?

A short on the low voltage side. Usual suspects are thermostat wire pinched under a panel or stapled through, thermostat wire rubbed bare where it enters the condenser, a bare conductor in the disconnect, a wet or corroded splice at a float switch, and a shorted contactor coil. Shut off the breaker and the disconnect, then disconnect the thermostat wire at the board and at the outdoor unit and add loads back one at a time.

My rollout switch or thermal fuse link opened. Can I just replace it?

Replace it, yes, but not before you learn why it opened. A one-shot link is a record that something got hot enough to need it - a plugged burner or heat exchanger, a blocked flue or vent, a cracked heat exchanger, a dead inducer, or a blower that never came on. Rollout means flame was outside the burner box. Put a new link in without fixing the cause and you will be back for another one.

Can I go up one size or twist in a piece of wire?

No. A fuse is a designed weak point. Oversize it and the next fault cooks the transformer or the traces on the board instead of costing you a dollar.