Daikin UATYQ20ABAY1, Инструкция по установке, эксплуатации и обслуживанию

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Translation from original instructions
Installation manual
34
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UATYQ*Y1
Packaged Rooftop
4P522680-1
6.5 Alarms and malfunctions
Possible malfunctions will trigger the protective devices and safety devices of the unit before serious faults occur.
All the “warnings” and “alarms” are recorded in the memory of the control and displayed on the display of the unit.
Before resetting an alarm, the cause that triggered it must be found and eliminated.
An alarm going off repeatedly quickly leads to serious damage to the unit.
Refer to the manual of the control for the alarms and warnings that appear on the display of the unit.
In case of anomalies not handled by the control panel, refer to the following troubleshooting section.
This troubleshooting section does not include causes due to deliberate work or tampering or particularly serious
malfunctions, for which a thorough analysis is necessary.
SYMPTOM LIKELY CAUSE POSSIBLE SOLUTION
The unit does not start, the display
is off.
No mains voltage.
Check that the main disconnect
switch is in the “ON” position.
Check for voltage in the power
supply line.
No voltage to the auxiliary circuit.
Check that the protective devices
upline and downline of the
transformer of the auxiliary circuit are
undamaged.
Reset the triggered protective device
after eliminating the cause that
triggered it
The unit does not start, the display is
off, the control is powered correctly.
The unit is switched off from
the display and the display is
disconnected or not working.
Restore the connection of the display
or replace it.
The unit does not start, the display is
off, the control is powered correctly
but the LEDs are not flashing.
The control is not working. Replace the control.
The unit is operating normally, the
display is off.
The connection of the display to the
control is disconnected.
Restore the connection between the
display and the control.
The display is not working. Replace the display.
The unit does not start, the display
is on.
There is no 230V auxiliary power
supply.
Check that the secondary circuit of
the 230V transformer is intact.
Check that the protective devices
downline of the 230V transformer
are intact.
Check that the phase sequence is
correct and that the phase sequence
relay is intact.
Presence of oil on the discharge of
the safety valve.
Opening of the valve due to failure of
the protective devices to operate.
The valve must be replaced.
Opening of the valve due to
overtemperature.
Replace the valve and restore the
charge.
Water leaks from the pump on first
start-up
Bedding in the mechanical seal
Pressurize the pump body 2 or 3
times by closing and opening the
delivery valve so as to correctly bed
in the seal.