Daikin split system fine with cool air, not with hot air

Question edited for clarity.
Question moved from home Refrigerators.

SiUS34-801A_b VRVIII Service Manual.pdf - Daikin AC

daikinac.com https://www.daikinac.com > content > assets > DOC PDF Thank you for your continued patronage of Daikin products. This is the new service manual for Daikin's Year 2008 VRVIII series Heat Pump System.

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  VRVIIIAIR-COOLED - Daikin AC

  https://www.daikinac.com > assets > DOC > PC...
  PDF
  
  Daikin's VRV heat recovery uses a dedicated hot gas pipe during heating operation allowing for higher off coil temperatures, even at lower ambient conditions, ...
  
  

Indoor to out door wiring diagram

This is stating that there has been a low pressure error on the system.

This could have been caused by a blockage in the pipe work or a possible shortage of refrigerant. It could also be due to a fault with the low pressure sensor/switch.

Your unit should cool 15 to 20 degrees. 75 return air temp should be below 60 degree supply air temp. If you are not in this range you likely have a refrigerant problem.

If you need further help, reach me via phone at https://www.6ya.com/expert/thomas_092728000e6acb79

This is a fault with the fan coils fan motor.
This could possibly be due to either an issue with the main PCB or the fan motor itself.

Capacitor to what? the indoor fan, the outdoor fan, the compressor?

Hi,

Here is a tip about troubleshooting your air conditioner...

There are many things that can cause your air conditioner not to cool...

Air Conditioner Trouble - Review the Possibilities

heatman101

google daikin (model number) manual . what are you trying to do or just want a manual ?they really dont tell you much in them.

THE ONLT PARTS THATS COMMON WITH BOTH HEAT AND COOL IS THE TRANSFORMER AND THE EVAPORATOR FAN MOTOR.

could be undercharged, or overcharged, or wires weren't put back on valves in unit.