Toshiba Carrier MMU-AP0074HPUL Service Manual page 57

8-3. Troubleshooting by check Display on Remote Controller
� In case of wired remote controller (RBC-AMT32UL)
1. Confirmation and check
When a trouble occurred on the air conditioner,
the check code and the indoor unit No. are
displayed on the display section of the remote
controller.
The check code is displayed while the air
conditioner operates.
If the display disappeared, operate the air
conditioner and check the error based upon the
following "Confirmation of error history".
2. Confirmation of error history
When a trouble occurred on the air conditioner,
the error history can be confirmed with the
following procedure.
(Up to 4 error histories are stored in memory.)
This history can be confirmed from either
operating status or stop status.
Procedure
When pushing
If [ Service Check] is displayed, the mode enters in the error history mode.
• [01: Error history order] is displayed in CODE No. window.
1
• [Check Code] is displayed in check code window.
• [Indoor unit address with error] is displayed in UNIT No.
Every pushing temp. set
order. The numbers in CODE No. indicates CODE No. [01] (Latest) to [04] (Oldest).
2
CAUTION
Do not push
3
After confirmation, push
How to read the check monitor display
<7-segment display>
<How to read>
0 1 2 3
SET
TEST
and buttons simultaneously for 4 seconds or more, the below display appears.
/ buttons, the error histories stored in the memory are displayed in
CL
button because all the error histories of the indoor unit will be deleted.
TEST
button to return to the usual display.
4 5 6 7 8
Check code
TEMP.
2
FILTER L LTER
RESET TEST
3
Description
9 A b C d
- 57 -
Indoor unit No. in which
an error occurred
ON / OFF
TIMER SET FAN MODE
TIME SAVE A AVE VENT
SET CL SWING/FIX UNIT LOUVER T
E F H J L
1
P