The Daikin E4 error code indicates a fault involving the refrigerant gas piping or the safety switch that disconnects the heat pump when there is not enough refrigerant in the system. The fix for an E4 error can simply be a gas top-up with a starting price of $50 depending on the gas used by your aircon model. If parts need to be replaced or a professional aircon servicing has to be performed, the starting costs (depending on your aircon model) are $150 for a thermistor, $250 for an outdoor PCB, $300 for a compressor, and $80 for a compressor chemical wash.
Your Daikin unit is outfitted with a red safety pressure switch called an LPS (low-pressure switch) which automatically kicks in to disconnect the heat pump. The automatic disconnect happens whenever a too-low refrigerant pressure threshold is detected. There are three possible reasons for a Daikin E4 error code. One, there is a clog in the copper piping system where the refrigerant gas flows. Two, the refrigerant is depleted. And three, there is a problem with the LPS itself.
Get the remote that comes with your Daikin unit, ensuring that it is set for controlling the indoor aircon component. Press the timer cancel button for at least five seconds. Look at the temperature display until you hear a long beeping sound. You will then see the temperature display change into a Daikin error code display.
Troubleshooting a Daikin E4 error, which normally indicates a wiring or sensor problem, is fairly easy and straightforward. Just do a thorough inspection of both the sensor and wiring systems. Look for obvious damage, corrosion, or build-up of dirt, especially in the refrigerant piping system. If the error persists after you’ve double-checked and secured any loose connection or cleaned the affected parts, then perhaps it’s time to talk to a professional. Contact Silverback Aircon through Whatsapp so we can help you.
An E4 error in your Daikin unit caused by a clog in the piping system is a readily serviceable issue; it is sometimes something that you can diagnose and remedy all by yourself. On the other hand, if the E4 fault points to a too-low refrigerant gas level circulating in your aircon unit, then you will need to schedule a service technician to come out and have it refilled to an acceptable level.
To check if you have sufficient refrigerant gas level in your Daikin aircon, just feel the temperature of the evaporator coil. It should normally be very cold to the touch, and if it’s not, then the unit might require a gas top up to run properly again.
Silverback Aircon has a long proven history of aircon gas top up professional servicing to countless residences across Singapore, and we’d be happy to quickly get your Daikin air conditioning unit back in superb working condition again. Prices for aircon gas top up are dependent on the refrigerant gas type and associated chemical overhaul (if applicable), and they are as follows:
The table below summarizes the potential servicing and parts replacement costs involved in fixing an E4 error scenario. The estimates are based on a system 1 9000 BTU unit.
A Daikin E4 fault, pointing to sensor or wiring troubles, might clear up after you have cleaned the relevant parts. But if it doesn’t or if you still encounter other issues or get other Daikin error codes, don’t hesitate to contact us via Whatsapp. We specialize in repairing Daikin aircon units. We also do aircon gas top up servicing for two of the most commonly used refrigerant gases: R22 and R410 gases.
Moreover, should some parts of your aircon be deemed no longer serviceable and require a replacement, we can do that quickly, too. Silverback Aircon has a collection of refurbished Daikin Aircon spare parts. For a full system replacement, you may check out our guide to aircon replacement costs.
If you talk to us today regarding your ongoing Daikin E4 error, please be prepared to give the condenser model number (stated in the invoice) and fan coil model number (right-hand side of the fan coil). The Whatsapp consultation with Silverback Aircon is free of charge, and we will also try to give you a quote on the cost of repair.
