HN61PC003 – RELAY (CARRIER, DC, 1172506)

If your electric furnace is not heating or the heat strips won’t energize, this relay may have failed. It controls power to the electric heating elements in Carrier, Bryant, and Payne equipment.

Specs: 24V coil, DPST configuration, 30A capacity

Replaces: 1172506, HN61PC003, HN61PC002, 1-1393212-7, T92S7D22-24

Fits: Carrier/Bryant/Payne electric furnaces and air handlers

Need help? See our AC Clicking But Not Starting Guide.

In stock at Open To Public HVAC Parts in Dallas. We test parts at the counter before you buy. Call or text (214) 340-9421.

Specs

• TypeDC control relay
• OEM CompatibilityCarrier

Cross-reference numbers

This part replaces the following OEM and aftermarket numbers:

• 1172506
• HN61PC003

Not sure if your number matches? Call (214) 340-9421 or bring the old part in — bench-testing is free.

Fits these models

• Carrier-platform DC control relay — operates DC-coil contactors and solenoid valves
• Verify exact part number + coil voltage match before installing

How does a heat sequencer work?

A small bimetallic heater inside the sequencer gets 24V on a heat call from the thermostat. The heat slowly warms a bimetal disc that closes successive contact sets over 30-90 seconds — energizing each heat strip in sequence to prevent a simultaneous current spike that would trip the breaker.

How do I test a heat sequencer?

Apply 24V to the coil terminals (no load). Wait 30-90 seconds — you should hear individual contacts click closed in sequence. Use a multimeter for continuity across each load terminal pair. If one stage never closes, replace.

SPST vs DPST vs DPDT vs TPST — what's the difference?

- SPST = single pole, single throw (1 contact set, switches 1 strip) - DPST = double pole, single throw (2 contacts, switches 2 strips simultaneously) - DPDT = double pole, double throw (2 contacts with NO + NC positions) - TPST = triple pole, single throw (3 contacts, switches 3 strips simultaneously)

Why won't my heat strips come on?

Test the sequencer first — bad sequencer = no signal to the strips. Also check: thermostat call on W terminal, 24V at sequencer coil during heat call, line voltage on strip side, intact heater elements (continuity test each strip).