–
106
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'20 • KX-T-373
E45
E45
Communication error between
inverter PCB and outdoor unit control PCB (2)
Stays Off
1. Applicable model
5. Troubleshooting
Outdoor unit
Diagnosis Countermeasure
NO
Replace the outdoor unit
control PCB.
Replace inverter PCB.
2. Error detection method
3
.
Condition of error displayed
If the communication between
inverter PCB and outdoor unit
control PCB is not established.
4. Presumable cause
• Faulty inverter PCB
• Faulty connector between
inverter PCB and outdoor unit
control PCB
•
Faulty outdoor unit control PCB
Note:
Error code
Remote control:
7-segment display:
LED Green Red
Indoor
Outdoor
Content
YES
YES
In case of:
LED on inverter PCB stays OFF
A
From previous page.
Disconnect CNI3
Is DC15V
output OK? (between
“TP_15V_+” and “TP_GND2”
on the control PCB)
NO
Is DC20V
output OK? (between
“TP_20V_+” and “TP_GND2”
on the control PCB)
*Check after 52C1 relay turned on
by cool/heat operating.
(between CNA1 1 and 3 pin)
Replace the outdoor unit
control PCB.
YES
A
From previous page.
NO
Dose capacitor C1 have
voltage over 200V?
*Check after 52C1 relay turned on
by cool/heat operating.
[For single phase model]
[For three phase model]
Main circuit faulty is
suspected.
Check the 52C1 relay, diode
module and cementing
resistor (R1 and R2)
condition.
Replace inverter PCB.
Faulty main circuit connection
(Three phase model)
Faulty relay or cementing resistor
(Three phase model)
•
•
E46
E46
Mixed address setting methods
coexistent in same network
Stays Off
Stays Off
1. Applicable model
5. Troubleshooting
Outdoor unit
Diagnosis Countermeasure
Is E46 displayed?
Save data for 30 minutes before stopping in Mente PC.
NO
Is it
manual address
setting?
Reset the power source and restart operation.
Turn ON the power source
of outdoor unit system one
by one and check the unit
that starts up with the auto
address setting.
NO
Check and save the data of
operating condition.
Check which addess setting
method (auto or manual
setting) is applied to the
outdoor unit system on
which the error exsists.
Test run
* No action is taken
because it is judged
that the power source
reset was not done after
changing address.
Set address manually.
Replace outdoor unit PCB.*
(Defective rotary switch)
* Before replacement,
the rotary switch for
address setting is not
damaged. (It was
experienced that No. 5
on rotary switch was not
recognized.)
the indoor SW5-2 (100 of
order for indoor address
setting) is OK or not.
2. Error detection method
If the auto address setting
and manual address setting
are mixed in one Superlink
network.
3
.
Condition of error displayed
In case that the units with old
and new Superlink systems are
mixed in one Superlink
network, if both auto address
setting and manual address
setting are exsited.
4. Presumable cause
• Mistake in the address setting
• Mistake in the signal wire
connection
Note:
Caution:
unless the power is reset after
changing addess.
<Reference>
Error display at mixed address setting
Auto Manual
Auto address setting E31 E46
Manual address setting E46 Normal
Error code
Remote control:
7-segment display:
LED Green Red
Indoor
Outdoor
Content
YES
YES
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