Daikin f3

[richard..]

Was on a site today to look at a vrv reyq14p8y1b. Set up service checker and will return latter.[ have to finish another job first] unit was on heating at time and discharge was reaching 110 to 125 dec. hp was at 22 bar/25 bar and compressor not reaching full speed. My gut says to reclaim charge and check for low refrigerant or non-Cond's.

[install monkey]

check resistance of discharge sensor- could be cooked, had it before where the sensor plugs on the pcb vibrated 1/2 way out

[richard..]

I wish it was the sensor but have checked all thermistors and reading correct

[RusBuka]

SH? Evap press, bypass and injection on/off?
High discharge in Daikin -> dead oil.

[frank]

Follow the troubleshooting guide for high discharge temperature...attached below

[nigne2011]

hi, outdoor abnormal discharge pipe temperature.

daikin fault codes

[Asbolute]

Was on a site today to look at a vrv reyq14p8y1b. Set up service checker and will return latter.[ have to finish another job first] unit was on heating at time and discharge was reaching 110 to 125 dec. hp was at 22 bar/25 bar and compressor not reaching full speed. My gut says to reclaim charge and check for low refrigerant or non-Cond's.

Low head pressure and high discharge, probably low refrigerant. Was the checker in discharge drooping control?