The Toshiba aircon E04 error code, one of the most commonly encountered errors, usually points to a communication error between the indoor and outdoor sub-units. It means the connection signal from the outdoor unit is not reaching or returning to the indoor unit. Possible causes of the E04 error on a Toshiba air conditioner include wiring problems, low refrigerant gas levels, a malfunctioning outdoor PCB, and an overloaded air conditioning system that has been set to run at full capacity for a long time.
For smart prevention of the latter possible E04 error cause involving extended use of the aircon to the point of overloading it, the National Environment Agency of Singapore has practical tips on energy-efficient home interior design; you can design your HDB flat to help maximize cooling and thus reduce your dependence on air conditioners.
Troubleshooting the Toshiba aircon E04 error involves a thorough maintenance check and inspection of the outdoor sub-unit, which should be in an open, well-ventilated area at all times. Any ether-like smell of coolant gas might indicate a leak in the piping, which could be behind the low levels of refrigerant gas; if this is the case, you need to call a service technician right away.
Begin troubleshooting by turning off the air conditioner, unplugging it from the power outlet, and removing the AC back cover of the outdoor unit. Remove any dirt or debris that you see, especially on the wiring system and the PCB mainframe. Check for loose wiring jacks, damaged or frayed wiring, and burnt terminals. After you’re done with the clean-up and inspection of the outdoor unit, replace the AC cover, plug the aircon back in, and turn it on. Hopefully, the error code is no longer displaying. If troubleshooting fails to clear the E04 fault, you might want to turn to an HVAC professional for help.
Silverback Aircon has years of experience installing, maintaining, and repairing Toshiba air conditioning units. We also have a thoughtfully maintained and expertly tested collection of refurbished Toshiba aircon spare parts which we can use as replacements for any defective parts that might be behind the E04 error code you’re getting on your Toshiba AC display and which you can’t clear through routine troubleshooting. The estimated price of an outdoor PCB is shown below:
If the E04 error code is found to be caused by low refrigerant gas levels, Silverback Aircon also has gas top up servicing to quickly address the problem. Gas top up servicing is just one of the many offerings in Silverback Aircon’s comprehensive aircon servicing options. The table below shows the prices for refilling different types of refrigerant gases.
Getting to the bottom of the E04 error code on your Toshiba aircon is just one of the many things Silverback Aircon can do for you. The E04 fault might be caused by a defective wiring or outdoor PCB, all of which we have ready replacement parts for. We also provide a refrigerant gas refilling service, in case your Toshiba E04 error points to low coolant gas levels. Silverback Aircon gives free consultation via Whatsapp. Let us help you fix the E04 fault on your Toshiba aircon as soon as possible. Talk to us today, and book an appointment with our service technicians to get your AC back up and running smoothly again.
