E2-06-07-08 - Open Circuit On Earth Leakage; Detection Core; E3-01-03-05 - Actuation Of High Pressure Switch - Daikin VRV IV+ Service Manual

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Possible cause: Humidity in the refrigerant circuit.
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
2.3.4 E2-06-07-08 – Open circuit on earth
leakage detection core
Main error code Sub error code
E2 06
07
08
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
Main PCB detects Unit will stop
open circuit on operating.
connector X101A.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed
order.
1 Check that connector X101A is correctly connected to the main
PCB. See "3.9 Main PCB" on
Possible cause: Open circuit on connector X101A.
2 Perform a check of the current sensor. See
sensor" on page 88.
Possible cause: Faulty current sensor.
3 Perform a check of the main PCB. See
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.
2.3.5 E3-01-03-05 – Actuation of high pressure
switch
Main error code Sub error code
E3 01
03
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.
RYYQ+RYMQ+RXYQ8~20U7Y1B
VRV IV+ Heat Pump
ESIE18-14 – 2019.07
Unit
Main
Sub 1
Sub 2
Reset
Manual reset via user
interface.
page 106.
"3.4 Current
"3.9 Main PCB" on
Unit
Main
Sub 1
Sub 2
Trigger Effect
High pressure switch Unit will stop
opens due to high operating.
pressure >safety
value, "6.6 Safety
devices" on
page 183.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed
order.
1 Check that all stop valves of the refrigerant circuit are open.
See "4.2 Refrigerant circuit" on
Possible cause: Closed stop valve in the refrigerant circuit.
2 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.
3 Clean the outdoor heat exchanger. See
page 140.
Possible cause: Dirty outdoor heat exchanger.
4 Perform a check of the high pressure switch. See
pressure switch" on page 97.
Possible cause: Faulty high pressure switch.
5 Check if the refrigerant circuit is correctly charged. See
"4.2 Refrigerant circuit" on page 133.
Possible cause: Refrigerant overcharge.
6 Check for the presence of non‑condensables and/or humidity in
the refrigerant circuit. See "4.2 Refrigerant circuit" on
Possible cause: Non‑condensables and/or humidity in the
refrigerant circuit.
7 Check if the refrigerant circuit is clogged. See
circuit" on page 133.
Possible cause: Clogged refrigerant circuit.
8 Perform a check of the condenser side expansion valve. See
"3.5 Expansion valve" on page 89.
Possible cause: Faulty condenser side expansion valve.
9 Perform a check of the main PCB. See
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
Reset
If field setting 2-15=1
(default): When
pressure drops below
the reset value and
then via the indoor
unit remote controller,
cycle OFF & ON.
If field setting 2-15=0:
When pressure drops
below the reset value
and then pressing
BS3 on main PCB on
outdoor unit, and then
via indoor unit remote
controller, cycle OFF
& ON.
page 133.
page 138.
"5 Maintenance" on
"3.7 High
page 133.
"4.2 Refrigerant
"3.9 Main PCB" on
Service manual
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