S9200U1000 – CONTROL BOARD

Honeywell/Resideo S9200U1000 universal hot surface ignition integrated furnace control for single-stage gas heating and cooling appliances. It provides main burner ignition through a 120V hot surface igniter, flame rectification sensing, pressure switch, high limit and rollout monitoring, circulating fan control, and three-LED status and fault diagnostics. Keyed wire harnesses are supplied so it can replace most integrated furnace controls, and DIP switches set heat fan on/off delays, HSI warm-up and trial-for-ignition timing. Resideo states it is intended for residential natural gas or liquid propane furnaces only.

Specifications published by the manufacturer. Source: manufacturer documentation.

Specs

• TypeUniversal HSI integrated furnace control, single stage
• Line Voltage120V (97-132 VAC), 60 Hz
• Low Voltage24V (19-30 VAC), 60 Hz
• Current Draw0.5 A at 24 VAC plus valve and contactor load
• Igniter Output5.0 A resistive at 132 VAC
• Gas Valve CompatibilityAny 24 VAC redundant direct ignition gas control rated 1.5 A or less
• Ignition Sequence30 s prepurge; HSI warm-up 17/27 or 30/30 s; trial for ignition 4, 6 or 8 s; 15 s postpurge
• Ignition TrialsThree, with 60 s inter-trial purge
• Flame Failure Response2 seconds maximum at 1 microamp
• Heat Fan DelaysON 30 or 60 s; OFF 60, 90, 120 or 180 s
• Circulator Load14.5 FLA / 25 LRA maximum at 120 VAC
• Induced Draft Blower2.2 FLA / 3.5 LRA maximum at 120 VAC
• Fuse3.0 A automotive type, replaceable
• Operating Temperature-40 to 175 F

How do I know the board is actually bad?

Most boards that get replaced were not the problem. Check the on-board fuse first (usually a 3 amp automotive blade), then the rollout and limit switches, the pressure switch and its hose, the flame sensor and the igniter. Then pull the fault history. Most controls from the last 20 years store the last four or five faults, and many have a recall button that scrolls them back. The legend is inside the blower door. If the board powers up, sequences and flashes a code at a switch, it is doing its job.

The 3 amp fuse keeps blowing. Do I need a board?

Almost never. A blown fuse means a short on the 24 volt side, and the most common by far is thermostat wire rubbed through where it crosses sheet metal, at a cabinet knockout or the condenser whip entry. Pull the thermostat wires off the board and the Y wire off the contactor, fuse it, and power up. If it holds, the fault is in the wiring.

Do the DIP switches matter?

Very much. Photograph every switch bank and wire before the old board comes out. Settings cover heat fan off delay (90, 120, 150 or 180 seconds), single or multi-stage stat, conventional or heat pump, and blower signal type. A wrong off delay reads like a bad board.

Is a control board a universal drop-in?

No. A communicating board (ComfortNet, Infinity, Evolution type) will not run a non-communicating system, and the reverse is true too. Stat, outdoor control and board must all speak the same language. Blower type matters too. PSC boards switch 120V speed taps, X13 boards send 24 volts to a torque input, variable speed boards send a serial signal. Boards are non-returnable once installed, so bring the model number in.