Status
This is a critical alarm, the unit will not operate in any mode.
Description
This code is displayed anytime there is no model data at the air handler. The model data is electronically stored data that is used to define (among other things) blower operation. Without model data, the air handler cannot function.
Expected Operation
No operation, including the thermostat will be permitted without the model data. The model data defines the IBM (Indoor Blower Motor) speed-torque curve. Without this information, the IBM cannot operate.
Cause
Faulty control board - possibly incorrect Bluetooth/EcoNet set up
Solution
Technician should use the contractor app to restore model data. In the service tab, click on Bluetooth Updates and follow the prompts to load latest model data.
If problem persists, replace Air Handler control.