Failure Diagnosis for Inverter System
SiE 00-07
158
Troubleshooting R-407C PLUS Series
4.2
How to Use The Monitor Switch on The Inverter PC Board
The monitor lets you know the contents of the latest stop due to malfunction by LED display on the inverter
PC Board. The inverter is equipped with a retry function that retries operation each time stop due to
malfunction occurs, and malfunction is therefore not ascertained by merely entering the five minutes
standby while retry is attempted the prescribed number of times. If the number of retry times is exceeded
within 60 minutes, malfunction is ascertained, and the corresponding malfunction code is displayed on the
indoor unit remote controller.
9
: Blink
8
: On
7
: Off
LED
A
1
2
3
4
Malfunction contents
Retry times
9
7
7
7
7
Normal
9
7
7
7
8
Malfunction of fin thermistor
3
9
8
8
7
7
Sensor malfunction
0
9
8
7
7
8
Insufficient voltage
3
9
7
7
8
7
Instantaneous over-current
3
9
7
8
8
8
Electronic thermistor
3
9
8
8
8
8
Stall prevention
3
9
7
8
7
7
Open phase detection
3
7
7
7
7
7
Malfunction of microcomputer
Unlimited
Summary of Contents for FXYBP20K7V1
Page 1: ...System R 407C PLUS Series Service Manual SiE 00 07 ...
Page 11: ...Introduction SiE 00 07 x ...
Page 17: ...Product Outline SiE 00 07 6 General Information R 407C PLUS Series ...
Page 41: ...Specifications SiE 00 07 30 Specifications R 407C PLUS Series ...
Page 119: ...Test Operation SiE 00 07 108 Test Operation R 407C PLUS Series ...
Page 132: ...SiE 00 07 Troubleshooting by Remote Controller Troubleshooting R 407C PLUS Series 121 ...
