A3P; A6P; H9-01-02-03 - Ambient Temperature Thermistor R1T Abnormality - Daikin VRV IV+ Service Manual

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2.3.35 H3-02-04-06 – Transmission error on
inverter PCB A3P
Main error code Sub error code
H3 02
04
06
INFORMATION
Main, Sub 1 and Sub 2 indications are relevant in multiple
outdoor unit configurations. Main outdoor unit is the unit to
which F1‑F2 IN transmission line is connected. Main, Sub
1 and Sub 2 outdoor units can be identified by field setting
1‑00.
Trigger Effect
Transmission Unit will stop
abnormality between operating.
outdoor unit main
PCB and inverter
PCB A3P.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed
order.
1 Check transmission wire between connector X28A on main
PCB and connector X6A on inverter PCB A3P. See
diagram" on page 146.
Possible cause: Faulty transmission wiring between main
PCB and inverter PCB A3P.
2 Perform a check of the main PCB. See
page 106.
Possible cause: Faulty main PCB.
3 Perform a check of the inverter PCB A3P. See
PCB" on page 99.
Possible cause: Faulty inverter PCB A3P.
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
2.3.36 H3-03-05-07 – Transmission error on
inverter PCB A6P
Main error code Sub error code
H3 03
05
07
INFORMATION
Main, Sub 1 and Sub 2 indications are relevant in multiple
outdoor unit configurations. Main outdoor unit is the unit to
which F1‑F2 IN transmission line is connected. Main, Sub
1 and Sub 2 outdoor units can be identified by field setting
1‑00.
Trigger Effect
Transmission Unit will stop
abnormality between operating.
outdoor unit main
PCB and inverter
PCB A6P.
RYYQ+RYMQ+RXYQ8~20U7Y1B
VRV IV+ Heat Pump
ESIE18-14 – 2019.07
To solve the error code
Unit
Main
1 Check transmission wire between connector X61A on main
Sub 1
Sub 2
2 Perform a check of the main PCB. See
3 Perform a check of the inverter PCB A6P. See
Reset
Power reset at
outdoor unit.
2.3.37
Main error code
H9
"6.2 Wiring
"3.9 Main PCB" on
"3.8 Inverter
Trigger
Ambient temperature
thermistor R1T read-
out is out of range.
To solve the error code
Unit
Main
Sub 1
1 Perform a check of the outdoor air thermistor. See
Sub 2
2 Perform a check of the main PCB. See
Reset
Power reset at
outdoor unit.
INFORMATION
It is recommended to perform the checks in the listed
order.
PCB and connector X6A on inverter PCB A6P. See
diagram" on page 146.
Possible cause: Faulty transmission wiring between main
PCB and inverter PCB A6P.
page 106.
Possible cause: Faulty main PCB.
PCB" on page 99.
Possible cause: Faulty inverter PCB A6P.
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
H9-01-02-03 – Ambient temperature
thermistor R1T abnormality
Sub error code
01
02
03
INFORMATION
Main, Sub 1 and Sub 2 indications are relevant in multiple
outdoor unit configurations. Main outdoor unit is the unit to
which F1‑F2 IN transmission line is connected. Main, Sub
1 and Sub 2 outdoor units can be identified by field setting
1‑00.
Effect
Unit will stop
operating.
INFORMATION
It is recommended to perform the checks in the listed
order.
"3.17 Thermistors" on page 128.
Possible cause: Faulty ambient air thermistor.
page 106.
Possible cause: Faulty main PCB.
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
2 Troubleshooting
"6.2 Wiring
"3.9 Main PCB" on
"3.8 Inverter
Unit
Main
Sub 1
Sub 2
Reset
Manual reset via user
interface.
Automatic reset when
thermistor read-out is
within range.
"3.9 Main PCB" on
Service manual
27