Technical data

59EN 10/2010 i-KI MTD / i-KIR MTD
MAINTENANCE AND SERVICE
I A
TABLE OF ALARMS ON HEAT PUMP DISPLAY
Alarms shown on the board display (PCB Display) located in the compressor compartment.
ERROR
CODE
FEATURES, PARTS, COMPONENTS
MALFUNCTIONING
CHECKS SOLUTION SIZE
- - POWER SUPPLY Check the power supply Verify the power supply 0011-0031
- - FUSE CF3 (250V T5A)
Check electrical continuity using a
tester
If CF3 is blown, replace it and check if there is a short-circuit
on a connector on the 4-way valve, frost protection heater,
expansion vessel or circulating pump.
If a short-circuit is found, replace the components.
0031
-- FUSE CF2 (250V T5A)
Check electrical continuity using a
tester
If
CF2 is blown, replace it and check if there is a short-circuit on a
connector on the 4-way valve, frost protection heater or expansion
vessel. If a short-circuit is found, replace the components.
0061
- - FUSE CF1 (250V T25A)
Check electrical continuity using a
tester
If CF1 is blown, replace the CONTROL BOARD on the
unit (PCB-CONTROLLER) and check resistance
between the pink-grey and orange-blue wires on the
POWER SUPPLY MODULE (PCBPOWER MODULE)
connector. If these values are below 100kΩ, replace the
POWER SUPPLY MODULE.
0031
--
CONTROL BOARD
(PCB-CONTROLLER)
Other than described above. Replace the CONTROL BOARD (PCB-CONTROLLER) 0061
A0 DC voltage error
FAN MOTOR
Unplug connector 9 and measure the
resistance between the red and black
wires on the connector. The correct
resistance value is above 100kΩ.
If the resistance is less than 100kΩ, replace the fan
motor.
Check electrical continuity of fuse CF4 using a tester.
If CF4 is blown, replace it.
0011-0031
FUSE CF4 (250V T3.15A)
POWER SUPPLY MODULE
Disconnect the terminals (orange and
blue) and check the resistance between
orange-blue. If the resistance is greater
than 100kΩ, the POWER SUPPLY
MODULE is normal.
If the resistance is less than 100kΩ, replace the POWER
SUPPLY MODULE.
0031
POWER SUPPLY Check power supply Verify the power supply 0011-0031
A1
Outlet temperature
error
COMPRESSOR DISCHARGE
TEMPERATURE PROBE
Check resistance using a tester
[see table 2]
Replace the probe 0011-0031
COMPRESSOR SUCTION
TEMPERATURE PROBE
Check resistance using a tester
[see table 1]
Replace the probe 0031
REFRIGERANT GAS LEAK
Check the service valve and the
refrigerant circuit.
Collect all the refrigerant and then recharge to the specified
mass
0011-0031
COMPRESSOR DISCHARGE
TEMPERATURE PROBE
Check resistance using a tester
[see table 4]
Replace the probe
0061
COMPRESSOR SUCTION
TEMPERATURE PROBE
Check resistance using a tester
[see table 3]
Replace the probe
REFRIGERANT GAS LEAK
Check the service valve and the
refrigerant circuit.
Collect all the refrigerant and then recharge to the specified
mass
A2
Overcurrent protec-
tion
Direct current (DC)
measurement
ABNORMAL CURRENT DRAW
Check the installation position (intake
and outlet air blocked)
Check for excessive gas
Make sure the position doesn’t block the air intake and outlet
0011-0031
If excessive gas is evident, collect all the refrigerant and then
recharge in accordance with rated data.
POWER SUPPLY VOLTAGE
DROP
Check power supply voltage (230V) Confirm power supply voltage (230V) 0031
MODULE DI POWER
Operate without connecting the com-
pressor connector.
If the same error appears again, replace the POWER SUP-
PLY MODULE.
0011-0031
FUSE CF2 (250V T15A)
Check electrical continuity of FUSE
CF2 (250V T15A) using a tester
If CF2 is blown, replace the CONTROL BOARD (PCB-CON-
TROLLER)
COMPRESSOR Other not specified above Replace the COMPRESSOR
A3
Current transformer
disconnected
CONTROL BOARD
(PCB-CONTROLLER)
- Replace the CONTROL BOARD (PCB-CONTROLLER) 0031
A4
Overcurrent protec-
tion
Alternating current
(AC) measurement
ABNORMAL CURRENT DRAW
Check the installation position (intake
and outlet air blocked)
Check for excessive gas
Make sure the position doesn’t block the air intake and outlet
0011-0031
If excessive gas is evident, collect all the refrigerant and then
recharge in accordance with rated data.
POWER SUPPLY VOLTAGE
DROP
Check power supply voltage (230V) Confirm power supply voltage (230V)
MOMENTARY POWER CUT (IN
THE EVENT DI LIGHTNING)
- Restart operation
A5
Abnormal COM-
PRESSOR rotation
INCORRECT OPERATION IN
OVERLOAD
Check the installation position (intake
and outlet air blocked)
Check for excessive gas
Make sure the position doesn’t block the air intake and outlet
0011-0031
If excessive gas is evident, collect all the refrigerant and then
recharge in accordance with rated data.
WATER PUMP BLOCKED
WATER CIRCUIT BLOCKED
Check the pump and the water circuit.
Remove any obstructions, clean the water filter, unblock the
pump.
0011
POWER SUPPLY VOLTAGE
DROP
Check power supply voltage (230V) Confirm power supply voltage (230V) 0011-0031
FUSE CF4 (250V T15A)
Check electrical continuity of FUSE
CF4 (250V T15A) using a tester
If CF4 is blown, replace the CONTROL BOARD
(PCB-CONTROLLER)
0011
FUSE CF2 (250V T15A)
Check electrical continuity of FUSE
CF2 (250V T15A) using a tester
If CF2 is blown, replace the CONTROL BOARD
(PCB-CONTROLLER)
0031
POWER SUPPLY MODULE
Check the resistance of the POWER
SUPPLY MODULE using a tester.
Unplug the connector from the compres-
sor and measure the resistance at the
ends of the connector six times:
between white-black, black-red, red-
white respectively and then reversing
polarity => If all the measurements are
above 100kΩ, the POWER SUPPLY
MODULE is working normally
If one of these values is less than 100kΩ, replace the POW-
ER SUPPLY MODULE
0011-0031
COMPRESSOR Other not specified above Replace the COMPRESSOR