Troubleshooting
Service Manual
43
Checking Points
Breakdown mode 1 : System does not work normally.
After checking the system, check the following checklist.
Initial checklist table(table1-1) from installation to operation
No.
Checklist
1
Are the switch capacity of main power and wiring diameter in accordance with regulations?
2
Is the prescribed power supplied to power terminal in ventilation system?
3
Is the wiring length of transmission line in accordance with regulations?
for wired remote controller : total extension of less than 500m for interlocking air controls : maximum extension
of less than 200m, total extension of less than 500m
4
Is the prescribed transmission line used? (type of line, diameter of line)
5
Are the transmission line and power line wired at more than 5cm interval?
6
Aren't there any multiple transmission line or signal line in the same wire pipe?
7
Aren't multiple transmission lines wired as multicable?
8
Does the connecting terminal plate of transmission have trouble? (for LCD remote controller, CN-REMO for air
conditioner interlocking controls, CN-AIR)
9
Is the transmission line precisely connected to the terminal plate of ventilation system?
10
Are the power line, transmission line, and signal line precisely connected to the indicated terminal plate?
11
Is the thermistor precisely connected to the terminal plate?
12
Is the option switch(SW1/SW2) correctly set?