Lampuki
19-07-2012, 02:02 PM
My Daikin RZP145DV1 suddenly stopped working with no error code. Daikin themselves do not seem to know what is wrong, and suggested replacing all the PCBs and condensor fan motors - an expensive exercise! Is it worth doing this in a step-wise fashion - eg replacing inverter board first, etc or should I just accept Daikin's suggestion? Here is a run down from our A/C tech:
Switched on AC, set temperature conroller to 30C.
Checked "SERVICE MONITOR where the green LED is flashing and the 4 red LEDs are off. SERVICE MONITOR saying eveything is normal
AC goes through its start up procedure, runs for approx. 30s and then shuts down.
Checked SERVICE MONITOR again where the green LED is flashing and the 4 red LEDs are off. SERVICE MONITOR saying eveything is normal.
Checked compressor windings for continuity, earth leakage, and current draw. Compressor is fine
Checked power supply and all connections
Checked all fuses found good
Thermisters checked @ 21C ambient
Checked thermistors R1T 23kohms (24kohms)
Checked thermister R2T 27kohms (24kohms)
Checked thermister R3T 284kohms (280kohms)
Checked thermister R4T 24kohms ( 24kohms)
Figures in () are the values the thermisters should read at 21C, thermisters are fine
Contacted Daiken technical support (Mark) discussed my findings where he suggested to also check the condensor fan motors.(CFM)
Reason being that they are often times responsable for causing damage to printed circuit boards (PCB) on inverter AC.
I checked both CFMs as per his instructions but could not find any mechanical damage.
Marks suggestion was to replace all PCBs on the outdoor unit and also the CFM. " Do not replace the PCBs without replacing the CFMs"
Here is the email from Daiken displaying part numbers and prices:
DAIKIN SERVICE SPARE PARTS daikinspare@daikin.com.au
RZP145DV1
Control 1693498 $570.00
Resistor 065339J $3.01
PCB, Inverter 1697320 $407.13
A3P 1301201 $16.68
Active Module 1283187 $209.90
Fan motor x 2 1283194 $218.42each
Any help will be greatly appreciated!
Switched on AC, set temperature conroller to 30C.
Checked "SERVICE MONITOR where the green LED is flashing and the 4 red LEDs are off. SERVICE MONITOR saying eveything is normal
AC goes through its start up procedure, runs for approx. 30s and then shuts down.
Checked SERVICE MONITOR again where the green LED is flashing and the 4 red LEDs are off. SERVICE MONITOR saying eveything is normal.
Checked compressor windings for continuity, earth leakage, and current draw. Compressor is fine
Checked power supply and all connections
Checked all fuses found good
Thermisters checked @ 21C ambient
Checked thermistors R1T 23kohms (24kohms)
Checked thermister R2T 27kohms (24kohms)
Checked thermister R3T 284kohms (280kohms)
Checked thermister R4T 24kohms ( 24kohms)
Figures in () are the values the thermisters should read at 21C, thermisters are fine
Contacted Daiken technical support (Mark) discussed my findings where he suggested to also check the condensor fan motors.(CFM)
Reason being that they are often times responsable for causing damage to printed circuit boards (PCB) on inverter AC.
I checked both CFMs as per his instructions but could not find any mechanical damage.
Marks suggestion was to replace all PCBs on the outdoor unit and also the CFM. " Do not replace the PCBs without replacing the CFMs"
Here is the email from Daiken displaying part numbers and prices:
DAIKIN SERVICE SPARE PARTS daikinspare@daikin.com.au
RZP145DV1
Control 1693498 $570.00
Resistor 065339J $3.01
PCB, Inverter 1697320 $407.13
A3P 1301201 $16.68
Active Module 1283187 $209.90
Fan motor x 2 1283194 $218.42each
Any help will be greatly appreciated!