Daikin RTSQ10PY1, Service Manual

Page: 110 / 226

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< Outdoor unit >
Pc < 2.89MPa
Pc < 2.55MPa
Pc > 3.04
MPa
Pc > 3.30MPa
Pc < 2.94
MPa
Normal operation
Compressor system (see *2):
1 step down per 10 sec.
Make opening
degree adjustment
of electronic
expansion valve
(Y1E) (see *3)
Compressor system (see *2):
1 step up per 10 sec.
Restart standby
(2 times per 30 min. at maximum)
Stop due to malfunction
(E3 displayed)
< Function unit >
• PcK < 2.94MPa
• PcK > 3.64MPa
• PcK > 3.04MPa
Normal operation
INV compressor
of function unit:
1 step up per 60 sec. INV compressor of
function unit:
1 step down per 10 sec.
• Operating in 2-stage
compression mode
• PcK > 3.04MPa
• PcK - PcN > 0.49MPa
• PcK < 2.89MPa
• PcK - PcN < 0.29MPa
Restart standby
(2 times per 30 min. at maximum)
Stop due to malfunction
(E3 displayed)
&
OR
Pc: Value detected by the high pressure sensor of master unit.
*2 : For compressor system steps, refer to information on page
91 and 92.
*3 : Return high-pressure refrigerant to the low pressure side.
PcK: Value detected by the high pressure sensor of
function unit.
PcN: Value detected by the high pressure sensor of
master outdoor unit.
HPS (4.0MPa) is
activated. Pc > 3.64
MPa
HPS (4.0MPa)
is activated
Pc > 3.04
MPa