SkyWalker
01-09-2009, 08:02 PM
hi guys,
had a daikin u4 fault today, found comms cable at outdoor unit very badly terminated, i re terminated the cable using crimps and thought all would be fine......
upon powering up the system again, i left it for a good half an hour but the outdoor unit would always flash H2P and the green service LED. spoke to daikin tech and they thought outdoor board was bad. what do you guys think.
i ran a new cable for purely communication to eliminate this, indoor unit seemed fine, power fine, green LED blinking on indoor pcb, one thing i thought was strange even when the indoor was thermostat on it wouldnt fault u4 but the outdoor would never start and always flash h2p
put the outdoor in forced cooling via ds1 and it fired up right away??? if i disconnect the comms from indoor it fault u4 but connected it wouldnt.
had a daikin u4 fault today, found comms cable at outdoor unit very badly terminated, i re terminated the cable using crimps and thought all would be fine......
upon powering up the system again, i left it for a good half an hour but the outdoor unit would always flash H2P and the green service LED. spoke to daikin tech and they thought outdoor board was bad. what do you guys think.
i ran a new cable for purely communication to eliminate this, indoor unit seemed fine, power fine, green LED blinking on indoor pcb, one thing i thought was strange even when the indoor was thermostat on it wouldnt fault u4 but the outdoor would never start and always flash h2p
put the outdoor in forced cooling via ds1 and it fired up right away??? if i disconnect the comms from indoor it fault u4 but connected it wouldnt.