30
8-7. OUTDOOR UNIT OPERATION MONITOR FUNCTION
SW2 setting
1
ON
2 3 4 5 6
Display detail
Explanation for display
Unit
Operation indicator SW2 : Indicator change of self diagnosis
<Digital indicator LED3 working details>
(Be sure that the 1 to 6 in the SW2 are set to OFF.)
(1) Display when the power supply is ON.
When the power supply is ON, blinking displays by turns.
Wait for 10 seconds at the longest.
(2) When the display lights (Normal operation)
Operation mode display
1
ON
2 3 4 5 6
(Initial setting)
SW2
1 second
interval
LED3
(Lighting)
Display
Operation Model
The tens digit : Operation mode
The ones digit : Relay output
O
C
H
d
Display
0
1
2
3
4
5
6
7
8
A
Compressor
Warming-up
Compressor
4-way valve
Solenoid valve
—
—
—
—
ON
ON
ON
ON
—
—
—
—
—
—
—
—
—
—
ON
ON
—
—
ON
ON
—
—
ON
ON
—
ON
—
ON
—
ON
—
ON
—
ON
—
—
OFF
COOLING
HEATING
DEFROSTING
Display during error postponement
Postponement code is displayed when
compressor stops due to the work of
protection device.
Postponement code is displayed while
error is being postponed.
(3) When the display blinks
Inspection code is displayed when compressor stops due to the work of protection devices.
Display Contents to be inspected (When power is turned on)
F5
63H connector(yellow) is open.
Display Inspection unit
0
Outdoor unit
Display
Contents to be inspected (During operation)
U1
U2
U3
U4
U5
U6
U7
U8
U9
Ud
UF
UH
UP
P6
P8
UE
PE
Ed
Abnormal high pressure (63H worked)
Abnormal high discharging temperature, shortage of refrigerant
Open/short circuit of discharging thermistor(TH4)
Open/short of outdoor unit thermistors(TH3, TH32, TH6, TH7 and TH8)
Abnormal temperature of heatsink
Abnormality of power module
Abnormality of superheat due to low discharge temperature
Abnormality in outdoor fan motor
Voltage fault, Input current sensor error
Overheat protection
Compressor overcurrent interruption (When Comp. locked)
Current sensor error, Input overcurrent interruption
Compressor overcurrent interruption
Freezing/overheating protection is working.
Abnormality of pipe temperature
Abnormal pressure of pressure sensor
Abnormality of entering water temperature
Serial communication error
Summary of Contents for PUHZ-W90VHA
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