39
Toshiba
13-4-4. Lock input does not stop the air conditioner.
13-4-5. Fire alarm input does not stop the air conditioner.
13-4-6. Clearing fire alarm input does not enable air conditioner
operation.
* If any of the above does not solve the problem, turn off the indoor unit, and turn it on again.
13-4-7. Communication error with the digital input / output relay
interface is displayed.
No.
Cause
Solution
1
Communication error with the digital input / output relay
interface.
1.Check if communication error with the digital input / output relay
interface is detected.
2.Check if communication error with the air conditioner is detected.
2
Communication error with the air conditioner.
1.Check if communication error with the digital input / output relay
interface is detected.
2.Check if communication error with the air conditioner is detected.
3
The inputs in the setting file are incorrect.
Check if the lock input name is correctly set in the [Indoor unit group
definition] sheet of the setting file.
No.
Cause
Solution
1
Communication error with the digital input / output relay
interface.
1.Check if communication error with the digital input / output relay
interface is detected.
2.Check if communication error with the air conditioner is detected.
2
Communication error with the air conditioner.
1.Check if communication error with the digital input / output relay
interface is detected.
2.Check if communication error with the air conditioner is detected.
3
The inputs in the setting file are incorrect.
Check if the lock input name is correctly set in the [Indoor unit group
definition] sheet of the setting file.
No.
Cause
Solution
1
Communication error with the digital input / output relay
interface.
1.Check if communication error with the digital input / output relay
interface is detected.
2.Check if communication error with the air conditioner is detected.
2
Communication error with the air conditioner.
1.Check if communication error with the digital input / output relay
interface is detected.
2.Check if communication error with the air conditioner is detected.
3
The controller is not turned on.
Turn on the controller.
No.
Cause
Solution
1
The digital input / output relay interface is not turned on. Check if the “POWER” LED of the digital input / output relay interface
illuminates.
2
The RS-485 communication wiring is not connected or
disconnected.
Check the conduction of the communication wiring.
3
The RS-485 communication wiring is incorrect or
connected with wrong polarity.
Check the terminal block connected.
4
The terminal resistance is not connected.
Check the value of the terminal resistance with a tester.
5
The wiring length is too long.
Change it to the specified wiring length.
6
The communication circuit of the digital input / output
relay interface failed.
Replace with the normal digital input / output relay interface and check that
the communication is available.
7
The communication circuit of the controller failed.
Replace with the normal controller and check that the communication is
available.
+00A10-026_01EN.book Page 39 Monday, February 14, 2011 2:46 PM
