Stopping Operation - Daikin VRV III REYQ8PY1 Service Manual

Si37-701
3.7

Stopping Operation

3.7.1 When System is in Stop Mode (Normal operation stop)
This mode is used to define actuator operations when the system stops.
Actuator
Compressor1
Compressor2
Compressor3
Outdoor unit fan1
Outdoor unit fan2
Electronic expansion valve
(Main)
Electronic expansion valve
(Supercooling)
Electronic expansion valve
(Refrigerant charge)
Four way valve (Heat
exchanger switch)
Four way valve (High/low
pressure gas pipe switch)
Solenoid valve (Main bypass)
Solenoid valve (Hot gas)
Solenoid valve (Refrigerant
regulator liquid pipe )
Solenoid valve (Refrigerant
regulator gas vent pipe)
Solenoid valve (Refrigerant
regulator exhaust pipe)
Solenoid valve (Refrigerant
regulator discharge pipe)
Ending conditions
3.7.2 Stop due to Malfunction
In order to protect compressors, if any of the following items has an abnormal value, the system will make "stop with
thermostat OFF" and the malfunction will be determined according to the number of retry times.
Item
1. Abnormal low pressure level
2. Abnormal high pressure level
3. Abnormal discharge pipe temperature level
4. Abnormal power supply voltage
5. Abnormal inverter current level
6. Abnormal radiator fin temperature level
Function
Elect.
symbol
Symbol
REYQ8~16P
REYQ REMQ
— M1C M1C
— M2C M2C
— M3C M3C
— M1F M1F
— M2F M2F
Y1E
EVM Y1E
Y3E
Y2E
EVT Y3E
Y5E
EVJ Y4E Y2E
Y2S
20SA Y3S
Y9S
20SB Y8S Y2S
Y5S
SVE Y6S
Y10S
SVP Y4S Y5S
SVL Y3S Y4S
SVG Y1S Y1S
SVO Y7S Y7S
SVT Y6S Y8S
—
0.07MPa
4.0MPa
135°C
Reverse-phase power supply
16.1A: 260 sec.
93°C
Operation
REMQ8P
OFF OFF
OFF —
— —
OFF OFF
OFF —
0 pls
0 pls
80 pls
Holds
Holds
OFF
OFF
OFF
OFF
OFF
OFF
Indoor unit thermostat is turned ON.
Judgment Criteria
Special Control
REMQ10•12P REMQ14•16P
OFF OFF
OFF OFF
— OFF
OFF OFF
— OFF
Malfunction Code
E4
E3
F3
U1
L8
L4
123