3-18
SM-16005-rev.2
TROUBLESHOOTING
3.2.2 Troubleshooting Using Alarm Codes
Alarm
Code
Activation of Protection Device (Float Switch) in Indoor Unit
l
The RUN indicator (red) flashes.
l
The indoor unit number (refrigerant cycle number - address number), the alarm code, the model code*
1)
,
the model name*
1)
and the number of connected indoor units are displayed on the LCD. The indoor unit
number and the alarm code are displayed on the 7-segment display of the outdoor unit PCB.
*1) Except for some models.
H
This alarm code is displayed when the contact between #1 and #2 of CN14 on the I.U. PCB is opened
for over 120 seconds during the cooling, dry, fan, or heating operation.
I.U. PCB: Indoor Unit PCB
*2): Connector for Condensate Pump
Indoor Unit Type
A
Connector for Condensate Pump
Ducted (Medium Static) with EconoFresh Kit
PCN6 on PCB1
Turn OFF power supply and remove
connectors A *
2
and CN14 on I.U. PCB.
Then turn ON power supply. Is DC12.5~
13.5V applied between A *
2
terminals?
Turn OFF power supply and connect
connector CN14 on I.U. PCB. Then
turn ON power supply. Is voltage applied
between A *
2
terminals less than 12.5V?
Failure of I.U. PCB
Failure of Condensate Pump
Activation of Float Switch FS
or Failure of Float Switch.
Yes
Make sure short circuit does not occur between A *
2
terminals
when measuring the voltage. Short circuit leads to I.U. PCB
malfunction.
Yes
No
No
Indication on Outdoor Unit PCB
Unit No.
of Malfunctioning Indoor Unit
Alarm Code
Содержание IDM030B21E Series
Страница 2: ......
Страница 10: ...viii SM 16005 rev 2...
Страница 14: ......
Страница 15: ...SM 16005 rev 2 1 1 INSTALLATION 1 Installation...
Страница 19: ...SM 16005 rev 2 2 1 OPERATION 2 Operation...
Страница 20: ...2 2 SM 16005 rev 2 OPERATION 2 1 Indoor Unit Refer to the Operation Manual for Ducted Medium Static EconoFresh...
Страница 22: ......
Страница 23: ...SM 16005 rev 2 3 1 TROUBLESHOOTING 3 Troubleshooting...
Страница 70: ......
Страница 71: ...SM 16005 rev 2 4 1 MAINTENANCE 4 Maintenance...
Страница 72: ...4 2 SM 16005 rev 2 MAINTENANCE 4 1 Maintenance of Outdoor Unit Refer to the Service Manual for Outdoor Unit...
Страница 89: ...SM 16005 rev 2 5 1 EXTERNAL INPUT OUTPUT AND FUNCTION SETTING 5 External Input Output and Function Setting...
Страница 130: ......
Страница 131: ...SM 16005 rev 2 6 1 FIELD WORK INSTRUCTIONS 6 Field Work Instructions...
Страница 140: ...6 10 SM 16005 rev 2 FIELD WORK INSTRUCTIONS 6 8 Mollier Chart for R410A f t 3 l b...
Страница 141: ...SERVICE PARTS LIST SM 16005 rev 2 7 1 7 Service Parts List...
Страница 142: ...SERVICE PARTS LIST 7 2 SM 16005 rev 2 Refer to the Service Parts List for Ducted Medium Static EconoFresh...
Страница 143: ......
Страница 144: ...2016 Johnson Controls Inc SM 16005 rev 2 Code No LIT 12012293 Revised February 2019...