TradeAssistIQHome

Mitsubishi Ecodan fault J1TOJ8

Wireless remote controller/wireless receiver communication failure (reception error)

Heat pump

What it means

Displayed if wireless receiver receives no/incomplete data from the wireless remote controller for 15 consecutive minutes. The digit after the J refers to the address of the wireless remote controller that has the error (e.g. J3 = address 3).

Likely causes

  1. The wireless remote controller is out of range of the wireless receiver
  2. Fault with wireless remote controller transmission circuit board

Where to start

  1. Check and replace the wireless remote controller battery if necessary
  2. Reposition the wireless remote control closer to the receiver and perform a communication test (refer to wireless remote controller installation manual)
  3. If 'OK' is displayed, the controller was out of range; reinstall within range

The full answer, free

  • How to put it right, step by step
  • The manual page for this fault (page 52), right under the answer
Ask about J1TOJ8 freeCreate a free account

Safety: Isolate the outdoor unit and any backup heater, and give the inverter capacitors time to discharge before you open the electrics. Anything on the refrigerant circuit needs F-gas certification.

From the Mitsubishi manual for the Ecodan. Check the model on the data plate before you order parts.

Other Mitsubishi Ecodan fault codes