Two blinks of the OFF light point to the bin thermistor on the older ZDIS150 icemaker.
Model compatibility: Monogram reuses codes across series and model years, so OFF light flashes 2 blinks may mean something different on another appliance or generation. Confirm this against your model’s documentation and record your full model number before acting.
Plain language
What this code means
The OFF light blinking twice signals a bin thermistor failure: the thermistor is open or disconnected, or its wiring is faulty.
The OFF light repeats two blinks in repeating intervals. On the ZDIS150 undercounter icemaker the technical service guide reads that as a bin thermistor failure.
What the signal means
The guide lists the trigger as an open or disconnected bin thermistor, or a fault in its wiring. These blinks can appear at any time in normal operation when a thermistor fails. The control checks the bin thermistor continuously during the Flush Mode, at the end of each Freeze Mode, in the Harvest Modes and in Idle Mode.
What a technician checks
This is service-guide content rather than an owner procedure.
That the bin thermistor is plugged into the control box.
That the thermistor is neither open nor shorted, and replacing it when it is.
The thermistor and its wiring harness, or reconnecting them.
In Service Test Mode a bin thermistor that is open also reads 2 blinks, and a shorted one reads 4 blinks.
Models
The guide is for the Monogram ZDIS150WSS, ZDIS150WBB and ZDIS150WWW, an older (legacy) series.
Related blink and light codes
OFF light, 3 blinks: three blinks, a harvest failure and the evaporator thermistor.
Counting two blinks on a Monogram icemaker? Call (844) 415-4997 for ice maker repair in Los Angeles, with the ZDIS150 model number. See the ice maker repair page as well.
Important safety warning. Do not attempt repairs involving electrical components, gas, water lines, refrigerant or sealed systems. Unplug the appliance if it is safe to reach the outlet, and leave internal diagnostics to a qualified technician.
Seeing this code on your Monogram appliance?
Book a specialist visit for a clear estimate and approval before any repair.
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