When An Alarm Is Activated - Daikin AKZ9 Series Instruction Manual

PIM00318A_EN.fm Page 39 Tuesday, October 26, 2010 12:37 PM

When an alarm is activated

An alarm is generated when a defect that disables the continuance of operation is generated in OILCON.
To cancel the alarm, turn OFF the power supply, and then turn it ON again.
Alarm list
Alarm Alarm∗
Description
code level
Heater overheat (S4B1:S184)
AA 2
(-H model only)
A6 2
DC fan motor lock error
E1 1
System error
E3 2
High pressure error
Compressor high temperature
E5 2
error
E6 2 Compressor (M2C) lock
Pump over-current relay
(K1S:S182) is activated.
EH 1
AKZ149, 329, 439: 2.5A
Optional protection device is
EJ 1 or 2
activated. (OP.)
FE 1
Pump outlet oil temperature error (Th10)
Inlet oil temperature is higher
FH 2
than 60˚C.
∗ Alarm level 1: Compressor, pump and fan stop.
Alarm level 2: Only compressor stops.
Cause
1) AKZ type:
No oil flow
1) Rotation speed of fan motor is insufficient
because of drop of DC voltage by break-
ing wire or looseness of connector.
2) Fan motor-control board communication
error
3) Fault of the DC fan motor
1) Internal parameter setting is invalid.
1) The oil temperature or room temperature
is higher than the specified range.
2) There is an obstacle near the air
intake/exhaust port.
3) The air filter is clogged, or the condenser is dirty.
4) Any factor other than the above
1) The oil temperature or room temperature
is higher than the specified range.
2) There is an obstacle near the air intake/
exhaust port.
3) The air filter is clogged, or the condenser is dirty.
1) Fault of the compressor
(Replace the compressor.)
1) The pump is overloaded with high-viscosity
oil.
2) Because the power supply voltage falls
below the operating range, the pump
current has increased.
3) The pump motor wiring has a break. (Open-phase)
4) A foreign object is caught in the pump, or
the pump motor has a fault.
1) The optionally-connected protection device
(or factory-connected device, if it is
incorporated in the unit) has been activated.
1) The pump outlet oil temperature is higher than 65˚C.
1) The heating value of the main machine has
exceeded the cooling capacity of the Oil
Cooling Unit. (Improper model selection)
2) There is an obstacle near the air intake/exhaust
port, resulting in cooling capacity deterioration.
3) The unit is running under capacity
suppressing control, because the standard
temperature (room temperature: 35˚C, oil
temperature: 35˚C) has been exceeded.
4) Temperature control is disabled because
the unit is operated in Mode 9 (capacity
direct designation mode).
Corrective action
Check if the oil circuit is properly connected and the pump
normally operates.
Check the insertion and breaking of the signal wire and engine
wire between the filter board and the inverter board.
Check the connector insertion and wire break.
Replace the control board.
Replace the DC fan motor.
Replace the control board.
Use the unit within the specified operating range.
Do not place any object that blocks ventilation at 500 mm or
shorter distance from the air intake/exhaust port.
Clean the air filter. (See "Maintenance/Inspection" on page
Contact DAIKIN Contact Center.
Use the unit within the specified operating range.
Do not place any object that blocks ventilation at 500 mm or
shorter distance from the air intake/exhaust port.
Clean the air filter. (See "Maintenance/Inspection" on page
Replace the compressor.
Use an operating fluid that provides 1.4 to 200 mm
in the specified oil temperature range.
Check if the power supply voltage is not lower than the
specified operating range. Check for an instantaneous power
supply voltage drop at startup of peripheral equipment.
Replace the pump motor.
Replace the pump motor.
Check the condition detected with the relevant protection device.
Check if the oil piping system is not blocked (fully closed).
If the unit is properly installed and the compressor runs at
100% capacity (capacity setting can be checked in the monitor
mode), select a model that provides larger cooling capacity.
Do not place any object that blocks ventilation at 500 mm or
shorter distance from the air intake/exhaust port.
If the standard temperature is exceeded, the cooling capacity
becomes smaller than the nominal capacity, because the unit
runs under capacity suppressing control.
Make sure that the cooling capacity of the Oil Cooling Unit is
larger than the main machine heating value throughout the oper-
ating temperature range.
Select an appropriate operation mode.
(The capacity direct designation mode does not execute temper-
ature feedback control.)
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