Daikin VRV III REYQ8PY1B, Service Manual

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Test Operation SiBE37-701
170 Test Operation
[Remote controller displays malfunction code]
Note: If any malfunction codes other than the above are displayed, check the service manual for how
to respond.
1.2.5.2.3 TEST RUN
1. Before test run
z
Make sure the following works are completed in accordance with the installation manual.
„
Piping work
„
Wiring work
„
Air tight test
„
Vacuum drying
„
Additional refrigerant charge
„
Check operation
z
Check that all work for the BS, indoor unit are finished and there are no danger to operate.
2. Test Run
After all works are completed, operate the unit normally and check the following.
(1) Make sure the indoor and outdoor units are operating normally.
(2) Operate each indoor unit one by one and make sure the corresponding outdoor unit is also
operating.
(3) Check to see if cold (or hot) air is coming out from the indoor unit.
(4) Push the fan direction and strength buttons on the remote controller to see if they operate
properly.
Note:
z
Heating is not possible if the outdoor temperature is 24°C or higher. Refer to the Operation
manual.
z
If a knocking sound can be heard in the liquid compression of the compressor, stop the unit
immediately and then energize the crank case heater for a sufficient length of time before
restarting the operation.
z
Once stopping, the compressor will not restart in about 5 minutes even if the On/Off button
of the remote controller is pushed.
z
When the system operation is stopped by the remote controller, the outdoor units may
continue operating for further 5 minutes at maximum.
z
The outdoor unit fan may rotate at low speeds if the Night-time low noise setting or the
External low noise level setting is made, but this is not a malfunction.
Malfunction
code
Installation error Remedial action
E3, E4
F3, F6
UF
The shutoff valve of the outdoor unit is
left closed.
Open the shutoff valve.
U1
The phases of the power to the outdoor
unit is reversed. Exchange two of the three phases (L1, L2, L3) to make
a proper connection.
U1
U4
LC No power is supplied to an outdoor, BS
or indoor unit (including phase
interruption).
Make sure the power source wire is properly connected
to the outdoor, BS or indoor unit and revise if necessary.
UF
There is conflict on the connection of
transmission wiring in the system. Check if the refrigerant piping line and the transmission
wiring are consistent with each other.
E3
F6
UF
Refrigerant overcharge.
Recalculate the additional amount refrigerant from the
piping length and correct the refrigerant charge level by
recovering any excessive refrigerant with a refrigerant
recovery machine.
E4
F3
Insufficient refrigerant.
z
Check if the additional refrigerant charge has been
finished correctly.
z
Recalculate the additional amount
refrigerant from the piping length and add the
adequate amount.
U7, U4
UF, UH
Field wiring is connected to “TO MULTI
UNIT (Q1,Q2)” terminal on the outdoor
unit PC-board (A1P) when the system is
one outdoor system.
Remove the line from the “TO MULTI UNIT (Q1, Q2)”
terminal.
UA
The internal transmission wiring to “TO
MULTI UNIT (Q1,Q2)” for the single
outdoor unit system are disconnected.
Connect the internal transmission wiring to “TO MULTI
UNIT (Q1,Q2)”. (See the wiring diagram.)