Precise Refrigerant Control: Optimizes R-22 system performance by adjusting flow to match fluctuating heat loads

Key Benefits for Technicians Dual-Purpose Protection: Effectively manages overpressure from both thermal expansion and control failure (over-firing)

or MR212 series—receives the accurate setpoint signal required for optimal fuel efficiency and stable thermal output

Check for 120V output to the motor during a call for fan

It is designed to interface exclusively with 120V ignitors (part number 100536-02) and should not be deployed in units using 95V ignition hardware

Heil Quaker ICP 1175881 Wire Harness 30067439-890 Precise Refrigerant Control: Optimizes R-22The Heil Quaker ICP 1175881 Wire Harness is a critical electrical interface designed for the precise transmission of 24V and 120V signals across high efficiency furnace and air handler platforms. Engineered as a genuine OEM replacement part, this harness ensures low resistance connectivity between the integrated furnace control (IFC) board, pressure switches, and the inducer motor assembly. In the field, technicians encounter intermittent faults or