November 14, 2023
A common issue we see is the Mitsubishi Electric MHK2 thermostat showing “Wait” on the screen. Unfortunately, this often leads to replacing the thermostat or control board. More often than not, the problem is a communication fault and not a “unit” fault. Mitsubishi Electric released a checklist for you to reference in case you see this fault. As always, if you need technical support, please reach out to the Famous Supply tech support department.
If the MHK2 controller screen displays “WAIT” for more than 10 minutes, this may indicate a communication fault between the indoor and outdoor unit. If this occurs, please follow the instructions below and verify the system is communicating before returning this product.
Note: If a Wireless Interface is connected to the indoor unit, make sure that it has been fully set up and commissioned in the kumo cloud® app before connecting the MHK2 controller.