Toshiba MMU-AP0091H Installation Manual page 156

14-2-8. Abnormal Outdoor Unit Discrimination Method
<By Fan Operating Function>
This function is provided to forcedly operate the fan of the outdoor unit in which an error occurred or the fan of
the normal outdoor unit by the switch operation on the interface P .C. board in the header unit.
To specify which one of the follower units connected to the system was erroneous while the system stops due to
a follower error (Check code [E28]), use this function.
[Operation]
<In case to operate the fan in the erroneous outdoor unit only>
1. Check all the switches, SW01, SW02, and SW03 on the interface P .C. board in the header unit are set to [1].
2. Keep pushing the push-switch SW04 for 2 seconds or more.
3. "E 1" is displayed on 7-segment display [A].
4. The fan of the outdoor unit in which error occurred starts operation within approx. 10 seconds when "E 1"
was displayed.
<In case to operate the fans in all the normal outdoor units>
1. Check all the switches, SW01, SW02, and SW03 on the interface P .C. board in the header unit are set to [1].
2. Push the push-switches SW04 and SW05 at the same time for 2 seconds or more.
3. "E 0" is displayed on 7-segment display [A].
4. The fans of all the normal outdoor units start operation with the super mode within approx. 10 seconds when
"E 0" was displayed.
[Clear]
Push the push-switch SW05 on the interface P .C. board in the header unit for 2 seconds or more.
The outdoor fan which was forcedly operated stops.
* Check [U. 1] is displayed on 7-segment display [A], and then finish the work.
7-segment display
[A]
Outdoor unit No. Error code display
156
[B]