CoreSense 9 Red 9 flashes - PROT output overcurrent

What the control is telling you

The module saw more than 2 A on its PROT (protection output) terminal for 40 ms and shut the output off. The manual gives only this definition.

Applies to: Copeland CoreSense 3-wire module: Amana/Deluxe R-410A ASX, ASZ, DSX, DSZ units and Amana R-32 ALXS / ALZS units

Likely causes

• Overload or short on the circuit fed by the PROT terminal (manual gives no further causes)

Test and repair steps

1. Warning: Kill power to the outdoor unit before touching wiring, the compressor terminals or the control.
2. Check the wiring and the load connected to the PROT terminal (typically the contactor coil circuit) for a short or wrong connection.
3. Correct the wiring, restore power and confirm the code does not return.

Models that show this code

150 models in Goodman/Amana R-32 GLXS/ALXS, Goodman/Amana R-410A GSX/ASX/DSX (ANX/SSX/VSX)

Other codes on the same units

• Comfort Alert TRIP Red TRIP LED - call present but compressor not running
• Comfort Alert TRIP+ALERT TRIP and ALERT LEDs flashing together - control voltage too low
• CoreSense 1 Yellow 1 flash - long run time (low side)
• CoreSense 2 Pressure trip - yellow 2 flashes (red 2 = lockout)
• CoreSense 3 Short cycling / pressure switch cycling - yellow 3 (red 3 = lockout)
• CoreSense 4 Locked rotor - yellow 4 (red 4 = lockout)
• CoreSense 5 Moderate run trip - yellow 5 (red 5 = lockout)
• CoreSense solid red Solid red TRIP - call present but compressor not running