2.Clearing from the interface P.C. board

Using the switches on the interface P.C. board, this function is to clear the currently detected error for each refrigerant circuit system without resetting the power supply.

(Restart of error detection)

Errors in both outdoor and indoor units are once cleared.

Set the rotary switches on the interface P.C. board of the header unit to the following setting.

SW01=[2] SW02=[16] SW03=[1]

(7-segment display)

[A][B]

[ E ]

[

]

Push the push-switch SW04 on the interface P.C. board of the header unit for 5 seconds or more.

[ C L] is displayed in 7-segment display [B] on the P.C. board

(7-segment display)

(for 5 seconds), and the error is completely cleared.

[A]

 

[B]

 

 

[

E

]

[ C L ]

 

 

 

 

7-segment display [A]

Interface P.C. board

 

Push

 

 

switch

 

 

 

SW04

 

 

 

7-segment display [B]

Push

switch SW05

SW01 SW02 SW03 <Rotary switch>

3.Clearing of error check code by power reset

This function is provided to clear error in a refrigerant circuit system by resetting the power of all the outdoor and the indoor units.

(Restart of error detection)

As same as the clearing method on the interface P.C. board, errors of both the outdoor and the indoor units are once cleared.

Method

1. Be sure to reset power of both the outdoor and the indoor units.

NOTE) After power reset, it requires usually 3 minutes to power-on due to the initial communication of the system. In same cases, it requires Max. 10 minutes.

107

Page 107
Image 107
Toshiba MMU-AP0091H service manual Clearing from the interface P.C. board, Clearing of error check code by power reset, 107