Daikin RXYQ96PYDN Service Manual page 128

SiUS34-801A_b
12.1.7 Check Operation Detail
CHECK OPERATION FUNCTION
Unit stopping
Step 1 Pressure equalizing
Step 2 Cooling start control
Step 3 Stop valve close check
Step4~8
Judgement function
Step 9 Pump down residual operation
Step 10 Standby for restarting
Completion
12.1.8 Emergency Operation
If any of the compressors malfunctions, disable the corresponding compressor or outdoor unit, and
then conduct emergency operation only with operational compressors or outdoor units.
There are two ways of conducting the Emergency operation : N with remote controller reset and
O=by setting outdoor unit PC board.
Applicable model
RXYQ72 to 120PYDN, PTJU
RXYQ144PTJU
RXYQ144 to 240PYDN
RXYQ168 to 240 PTJU
N Emergency operation with remote controller reset
[Emergency operation method]
•
[Details of operation]
VRVIII R-410A Heat Pump 60Hz
(Press the MODE button BS1 once and set to SETTING MODE 1 (H1P: OFF))
Press the TEST button for 5 seconds.
10 sec to 10 minutes
20 sec to 2 minutes
• Stop valve close check
• Wrong wiring check
• Correct Refrigerant charge check
• Piping length check
5 minutes
5 minutes
Operating method
On the multi outdoor unit system, if any of the outdoor unit line causes a malfunction (in this
case, the system will stop and the corresponding malfunction code will be displayed on the
indoor remote controller), disable only the corresponding outdoor unit from operating for a 8
hours using the indoor remote controller, and then conduct emergency operation with
operational outdoor units.
Reset the remote controller (i.e., press the RUN/STOP button on the remote controller for 4
seconds or more) when the outdoor unit stops because of malfunction state.
LED display (H1P~H7P) (
3383333
3933338
3933383
3933388
3933833
3933838
3933883
3938338
3938383
N Emergency operation with
remote controller reset
(Auto backup operation)
–
Backup operation by the
indoor unit
Field Settings
8: ON 3: OFF 9: BLINK)
Stop valve check
Stop valve check
Wrong wiring check
Piping length check
O Emergency operation with
outdoor unit PC board setting
(Manual backup operation)
Backup operation by the
compressor
Backup operation by the
outdoor unit
113