Daikin RTSQ20PY1 Service Manual page 112

Protection Control
[In heating operation]
★
Pe < 0.17
MPa
INV. compressor (see *2):
3 steps down per 10 sec.
• Pe < 0.13MPa
&
• A lapse of 10 sec.
STD compressor 2:
OFF
• Pe < 0.13MPa
&
• A lapse of 10 sec.
STD compressor 1:
OFF
Pe < 0.12MPa
Hot gas solenoid valve (Y1S):
ON
Pe < 0.07MPa
Restart standby
(3 times per 60 min. at maximum)
101
For systems with multi outdoor units, the control shown below is conducted by outdoor
unit.
Normal operation
& • Pe > 0.20MPa
• A lapse of 15 sec.
& • Pe < 0.17MPa
• A lapse of 10 sec.
& • Pe < 0.13MPa
• A lapse of 10 sec.
Pe > 0.17MPa
Stop due to malfunction
• Pe > 0.23MPa
&
• Compressor step = Max. step
INV. compressor (see *2):
1 step up per 15 sec.
INV. compressor:
52 Hz
Low pressure standby occurs
4 times in a period of 60 min.
(E4 displayed)
SiBE31-801_C
Pe: Value detected by the low
pressure sensor by each
outdoor unit.
*2 : For INV. compressor steps,
refer to information on P.92
and 93.
Function