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10 Troubleshooting
Installer and user reference guide
43
RXYTQ8~16T7YF
VRV IV system air conditioner
4P388989-1B – 2016.02
Main code
Sub code
Cause
Solution
Master
Slave 1
Slave 2
Transmission outdoor unit - inverter:
INV1 transmission trouble - A1P
(X20A, X28A, X40A)
Check connection.
Transmission outdoor unit - inverter:
FAN1 transmission trouble - A1P
(X20A, X28A, X40A)
Check connection.
Transmission outdoor unit - inverter:
FAN2 transmission trouble - A1P
(X20A, X28A, X40A)
Check connection.
Transmission outdoor unit - inverter:
INV2 transmission trouble - A1P
(X20A, X28A, X40A)
Check connection.
INV1 unbalanced power supply
voltage
Check if power supply is within range.
INV2 unbalanced power supply
voltage
Check if power supply is within range.
Reversed power supply phase
malfunction
Correct phase order.
Reversed power supply phase
malfunction
Correct phase order.
INV1 voltage power shortage
Check if power supply is within range.
INV1 power phase loss
Check if power supply is within range.
INV2 voltage power shortage
Check if power supply is within range
INV2 power phase loss
Check if power supply is within range.
Malfunction code: System test run not
yet executed (system operation not
possible)
Execute system test run.
Faulty wiring to Q1/Q2 or indoor -
outdoor
Check (Q1/Q2) wiring.
Faulty wiring to Q1/Q2 or indoor -
outdoor
Check (Q1/Q2) wiring.
System test run abnormal ending
Execute test run again.
Warning: faulty wiring to Q1/Q2
Check Q1/Q2 wiring.
Malfunction code: faulty wiring to Q1/
Q2
Check Q1/Q2 wiring.
▪ Too
many
indoor
units
are
connected to F1/F2 line
▪ Bad wiring between outdoor and
indoor units
Check indoor unit amount and total
capacity connected.
System mismatch. Wrong type of
indoor units combined (R410A,
R407C, RA, Hydrobox, etc)
Indoor unit malfunction
Check if other indoor units have
malfunction and confirm indoor unit
mix is allowed.
Connection malfunction over indoor
units or type mismatch (R410A,
R407C, RA, Hydrobox, etc)
Check if other indoor units have
malfunction and confirm indoor unit
mix is allowed.
Connection malfunction over indoor
units or type mismatch (R410A,
R407C, RA, Hydrobox, etc)
Check if other indoor units have
malfunction and confirm indoor unit
mix is allowed.
Wrong unit combination (multi system) Check if unit types are compatible.
Wrong unit combination (multi system) Check if unit types are compatible.
Auto address malfunction
(inconsistency)
Check if transmission wired unit
amount matches with powered unit
amount (by monitor mode) or wait till
initialisation is finished.
Содержание RXYTQ10T7YF
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