TradeAssistIQHome

Daikin Altherma fault F-01

Incorrect setting of space cooling OFF temperature

Heat pump

What it means

Setting [F-01] defines the space cooling OFF temperature. Incorrect setting can cause the space cooling to not function as expected.

Likely causes

  1. Incorrect setting of space cooling OFF temperature (setting [F-01])
  2. Water pump software control behaviour based on setting [F-0D]
  3. Incorrect refrigerant charge
  4. Faulty expansion valve
  5. Faulty suction thermistor
  6. Blockages in refrigerant circuit

Where to start

  1. Check if setting space cooling OFF temperature (setting [F-01]) is correct (keep at 10°C)
  2. Check water pump start/stop conditions
  3. Verify setting [F-0D] configuration (continuous, sample, or request)

The full answer, free

  • 5 more checks in order
  • The readings and component tests from the manual
  • How to put it right, step by step
  • The manual page for this fault (page 85), right under the answer
Ask about F-01 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 Daikin manual for the Altherma. Check the model on the data plate before you order parts.

Other Daikin Altherma fault codes