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Daikin Furnace Error Codes
If you're looking for help fixing your Daikin Furnace, look no further! Our comprehensive Daikin Furnace error code guide will explain common issues, provide tips, and show you how to read your model's error codes.
CODE: One LED flash that stays on continuously
PROBLEM: No signal from the thermostat.
FIX: Turn off the unit’s power and check connections.
CODE: Single LED flash
PROBLEM: Furnace lockout due to an excessive number of ignition retries (3).
FIX: Locate and correct gas interruption. Reset by lowering it for 20 seconds and then raise it back, furnace will reset itself after one hour.
CODE: Two LED flashes
PROBLEM: Draft inducer is not operating or the pressure switch circuit has closed.
FIX: Replace the induced draft blower pressure switch, or repair the short.
CODE: Three LED flashes
PROBLEM: The pressure switch is open.
FIX: Pressure switch may need to be replaced.
CODE: Four LED flashes
PROBLEM: Pressure issue. High limit cut-off due to faulty wiring or bad filters.
FIX: Replace or clean the air filter; clean drain tubes of moisture or debris; may have an open limit switch that requires a jump, ensure not to run it with the main switch bypassed.
CODE: Five LED flashes
PROBLEM: The unit is sensing a flame without a call for heat.
FIX: Might be the result of a slowly closing valve. Turn off the gas until the valve is fixed.
CODE: Seven LED flashes
PROBLEM: Faulty flame sensor.
FIX: Flame sensor might be dirty or placed too far from flame. Clean if dirty, replace if defective.
CODE: Continuous LED flashing
PROBLEM: Polarity of volt power is reversed.
FIX: Review wiring diagram to correct polarity.
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Daikin Furnace fault codes
Daikin Furnace diagnostic codes
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Daikin Furnace common faults
The furnace and air conditioner are great. However, the thermostat is pretty complicated to make changes. I did not find useful information on the web to help me through the process of changing high and low temperature and setting the schedule.
I purchased my home in 2016 and it was built in 1977. This home is ~2,600 sq.ft. and has an unfinished basement. The HVAC system was very dated, and the furnace was likely the original. Using Legacy Heating and Air, Inc., a new full system install was done. The components used are all Daikin (aside from a water heater also replaced), and are the following: DM97MC1005CN (Furnace), DX17VSS421AA (A/C), CAPE4860C4 (Coil), DTST-CWBSA-NI-A (Thermostat). I could immediately feel the difference. There were rooms in the house that weren't getting much or any air adjustments because the old system was simply not a great fit for the house and inefficient. With the current system, I can now cool or heat the house evenly several degrees within minutes. The new thermostat is very slick, and easy to control. I haven't seen the new cost for energy consumption (not billed using new system yet), but from what I can tell is it's going to be a nice difference. Everything is incredibly quiet and I'm very pleased with this investment.
My old furnace needed replacing and I struggle with the decision to spend a little more for a modulating furnace. I finally choose a DM97MC furnace with a Daikin One thermostat. I am very impressed how quiet the system is. I can’t even hear then it runs. And, now my house is more balanced even with no swings in temperature. Very impressive.
I just recently had the new Daikin furnace installed into our home and so far I'm very impressed with both it's energy efficiency as well as it's overall quiet operation. This new unit also has a much smaller footprint than the unit it's replacing, which in turn takes up less valuable space in our utility room. I'm very pleased with making this purchase.
We purchased a new furnace and central air unit. The house seems much more cooler with so much less effort. The air condition unit outside is so quiet you can hardly hear it running. We haven’t how do use the furnace yet but I’m sure it will be just as effective. We are extremely happy with both of our set ups and Applegate cooling and heating did an amazing job installing them. The warranty coverage that comes with the system is absolutely amazing along with all the rebates.