Honeywell MHK1 RedLink Programmable Thermostat for Mitsubishi
The MHK1 thermostat kit consists of a MRCH1 Honeywell RedLink Wireless Thermostat and a MIFH1 Wireless Receiver that mounts and wires to a Mitsubishi indoor unit.
| Error Code | Description |
| E0 27 | Temperature out of range. Verify device temperature is within operating range. If within range for at least 30 minutes and problem persists, replace thermostat. |
| E0 91 | Communication has been lost for more than 10 minutes. Check cable connection. Try replacing the cable. |
| E1 29 | Attempting to connect incompatible wireless device. |
| E1 34 | Low signal strength. Move thermostat closer to receiver. |
| E1 38 | Make sure "Connect" light on receiver is flashing and thermostat is at least 2ft away from receiver. |
| E1 54 | Indoor unit does not support wireless receiver. |