Daikin VRV III REYQ8PY1, Service Manual

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Si37-701 Special Control
Function 123
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.
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.
Actuator Symbol
Elect.
symbol
Operation
REYQ REMQ
REYQ8~16P REMQ8P REMQ10•12P REMQ14•16P
Compressor1 — M1C M1C OFF OFF OFF OFF
Compressor2 — M2C M2C OFF — OFF OFF
Compressor3 — M3C M3C — — — OFF
Outdoor unit fan1 — M1F M1F OFF OFF OFF OFF
Outdoor unit fan2 — M2F M2F OFF — — OFF
Electronic expansion valve
(Main)
EVM
Y1E
Y3E
Y1E 0 pls
Electronic expansion valve
(Supercooling)
EVT
Y2E
Y5E
Y3E 0 pls
Electronic expansion valve
(Refrigerant charge)
EVJ Y4E Y2E 80 pls
Four way valve (Heat
exchanger switch)
20SA
Y2S
Y9S
Y3S Holds
Four way valve (High/low
pressure gas pipe switch)
20SB Y8S Y2S Holds
Solenoid valve (Main bypass) SVE
Y5S
Y10S
Y6S OFF
Solenoid valve (Hot gas) SVP Y4S Y5S OFF
Solenoid valve (Refrigerant
regulator liquid pipe )
SVL Y3S Y4S OFF
Solenoid valve (Refrigerant
regulator gas vent pipe)
SVG Y1S Y1S OFF
Solenoid valve (Refrigerant
regulator exhaust pipe)
SVO Y7S Y7S OFF
Solenoid valve (Refrigerant
regulator discharge pipe)
SVT Y6S Y8S OFF
Ending conditions — Indoor unit thermostat is turned ON.
Item Judgment Criteria Malfunction Code
1. Abnormal low pressure level 0.07MPa E4
2. Abnormal high pressure level 4.0MPa E3
3. Abnormal discharge pipe temperature level 135
°
C F3
4. Abnormal power supply voltage Reverse-phase power supply U1
5. Abnormal inverter current level 16.1A: 260 sec. L8
6. Abnormal radiator fin temperature level 93
°
C L4