A17 Ct Error (Starter Current Detection Failure - Panasonic 2WAY Multi Technical & Service Manual

A17 CT Error (Starter Current Detection Failure)

Error detection method
When the starter power primary current meets the following conditions, an error is determined upon 5
occurrences in 1 hour.
• During cranking: With no detection of starter current, and with revolution speed pulse detected, when 5
seconds pass during cranking or when engine attains complete combustion.
Troubleshooting
1
Does the wiring from the starter power source magnet switch
1-1
CT1
(52S) terminal No. 1 pass through CT1 (current sensor)?
(Current
Use a clamp meter on the R-phase wiring of the starter power
sensor 1)
1-2 source to measure the current during cranking. Was the
current 5A or more?
Is there a voltage of AC 0.5V or more between outdoor main
1-3 board connector 3P (yellow) CN063 No. 1 and No. 3 during
cranking?
2
Starter Broken wire or poor contact in wiring for R and T phases of
2-1
power starter power source?
source
● For work procedure for replacing outdoor main board, see "5. Reference Document".
● For board and Electrical Wiring Diagram, see Chapter 6.
• Outdoor main board: page VI-2
• Outdoor power board: page VI-3
• Converter board: VI-4
• Indoor control board for DC motor models: page VI-5
• Outdoor Unit Electrical Wiring Diagram: page VI-6* Reference (Electrical Wiring Diagram C - D-1 - 2)
IV–17
Yes 1-2
No Repair wiring
Yes 1-3
No 2-1
Replace outdoor main
Yes
board
Replace current sensor
No
1
Yes Repair wiring
Replace starter power
No
source