Inverter error: the outdoor unit received an error from the inverter board. The operation lamp blinks 6 times and the timer lamp blinks 3 times.
Likely causes
- External cause such as a momentary voltage drop or an open in the supply
- Power-supply wiring to the inverter PCB disconnected or open
- Inverter PCB failure
Safe checks for 63
- Switch the breaker off and back on once. If the 6-and-3 blink returns, leave the outdoor unit off
- Technicianthe manual checks inverter wiring and then replaces the inverter PCB
Capacitors can hold a charge after the power is off. Safety terms.
When to call a pro
Code 63 is the inverter, not a filter problem. Call a licensed HVAC technician.
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Multimeter for appliance and HVAC diagnosis: guide
In this code: External cause such as a momentary voltage drop or an open in the supply
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