Daikin RXYQ96PYDN Service Manual page 229

Protection Control
[INV compressor]
HTdi>239˚F
or
Tp>275˚F
INV Comp. upper
limit step:
1-step down
After 30 sec.
[STD compressor]
Discharge pipe temp.
protection control not limited
8.4 Inverter Protection Control
Inverter current protection control and inverter fin temperature control are performed to prevent
tripping due to a malfunction, or transient inverter overcurrent, and fin temperature increase.
214
Normal operation
HTdi>239˚F
or
Tp>275˚F
In control of discharge pipe temperature protection
Frequency agreement
52Hz+OFF
Discharge pipe
temperature
standby
HTds>248˚F continues for 5 min. or more.
or HTds>275˚F
Tp>275˚F continues for 10 min. or more.
After 10 min.
In the case of multi-outdoor-unit system, each INV compressor performs these controls in the
following sequence.
HTdi<212˚F
&
Tp<230˚F
INV upper limit step=max (Max. step)
INV Comp. upper
limit step:
1-step up
After 20 sec.
HTdi<230˚F
&
Tp<257˚F
HTdi>266˚F
or
HTdi>248˚F continues for 90 seconds
or more.
HTdi>275˚F
or
HTdi>248˚F continues for 10 minutes or more.
When occuring 3 times within 100 min.,
the malfunction code "F3" is output.
HTds : Value of STD compressor discharge
Tp : Value of compressor port temperature
compressor stops.
pipe temperature ( Tds) compensated
with outdoor air temperature
calculated by Tc and Te , and suction
superheated degree.
Applicable STD
VRVIII R-410A Heat Recovery 60Hz
SiUS34-801A_b