P4-01-04-05 - Fin Thermistor Abnormality On Inverter Pcb A3P; P4-02-15-17 - Fin Thermistor Abnormality On Fan Inverter Pcb A4P; P4-03-16-18 - Fin Thermistor Abnormality On Fan Inverter Pcb A7P - Daikin VRV IV+ Service Manual

2 Troubleshooting
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed
order.
1 Check for objects near the indoor unit that may block the
airflow. See "4.3 External factors" on
Possible cause: Airflow of the indoor unit is blocked.
2 Clean the air filters of the indoor unit(s). See service manual of
the respective indoor unit(s).
Possible cause: Faulty or clogged air filter.
3 Adjust external static pressure setting for ducted type indoor
units, if necessary.
4 Restart refrigerant auto‑charge function. See installer reference
guide for more information.
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
2.3.96 P4-01-04-05 – Fin thermistor abnormality
on inverter PCB A3P
Main error code Sub error code
P4 01
04
05
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
Inverter PCB A3P Unit will stop
detects high operating.
temperature on
power module.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed
order.
1 Perform a check of the fin thermistor of the PCB. See
"3.17 Thermistors" on page 128.
Possible cause: Faulty fin thermistor of the PCB.
1 Check the required space around the outdoor unit heat
exchanger. See "4.3 External factors" on
Possible cause: Insufficient air flow or air by‑pass due to
required space specifications not met.
2 Perform a check of the liquid cooling expansion valve. See
"3.5 Expansion valve" on page 89.
Possible cause: Faulty liquid cooling expansion valve.
3 Perform a check of the inverter PCB A3P. See
PCB" on page 99.
Possible cause: Faulty inverter PCB A3P.
Service manual
48
https://daikin-p.ru/catalog/vrv-daikn/naruzhnye-vrv-bloki-daikin
page 138.
Unit
Main
Sub 1
Sub 2
Reset
Manual reset via user
interface.
Automatic reset when
fin temperature
drops.
page 138.
"3.8 Inverter
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
2.3.97 P4-02-15-17 – Fin thermistor abnormality
on fan inverter PCB A4P
Main error code Sub error code
P4 02
15
17
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
Fan inverter PCB Unit will stop
A4P detects high operating.
temperature on
power module.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed
order.
1 Perform a check of the fin thermistor of the PCB. See
"3.17 Thermistors" on page 128.
Possible cause: Faulty fin thermistor of the PCB.
1 Check the required space around the outdoor unit heat
exchanger. See "4.3 External factors" on
Possible cause: Insufficient air flow or air by‑pass due to
required space specifications not met.
2 Perform a check of the liquid cooling expansion valve. See
"3.5 Expansion valve" on page 89.
Possible cause: Faulty liquid cooling expansion valve.
3 Perform a check of the fan inverter PCB A4P. See
inverter PCB" on page 92.
Possible cause: Faulty fan inverter PCB A4P.
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
2.3.98 P4-03-16-18 – Fin thermistor abnormality
on fan inverter PCB A7P
Main error code Sub error code
P4 03
16
18
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.
Unit
Main
Sub 1
Sub 2
Reset
Manual reset via user
interface.
Automatic reset when
fin temperature
drops.
page 138.
"3.6 Fan
Unit
Main
Sub 1
Sub 2
RYYQ+RYMQ+RXYQ8~20U7Y1B
VRV IV+ Heat Pump
ESIE18-14 – 2019.07