Troubleshooting Based On Information Displayed On Remote Control - Toshiba MMD-AP0726HP-UL Service Manual

9-3. Troubleshooting based on information displayed on remote control

Using main remote control (RBC-AMT32UL)
(1) Checking and testing
When a trouble occurs to an air conditioner, a
check code and indoor unit No. are displayed on
the display window of the remote control. Check
codes are only displayed while the air
conditioner is in operation.
If the display has already disappeared, access
check code history by following the procedure
described below.
(2) Trouble history
The trouble history access procedure is described below (up to four check codes stored in memory).
Check code history can be accessed regardless of whether the air conditioner is in operation or shut
down.
<Procedure> To be performed when system at rest
1
Invoke the SERVICE CHECK mode by pressing the
SET buttons simultaneously and holding for at least 4
seconds.
The letters " SERVICE CHECK" light up, and the check code "01" is
displayed, indicating the trouble history. This is accompanied by the
indoor unit No. to which the trouble history is related and a check code.
2
To check other trouble history items, press the
button to select another check code.
Check code "01" (latest) → Check code "04" (oldest)
Note: Trouble history contains four items.
3
When the button is pushed, normal display is
restored.
REQUIREMENT
CL button as it would erase the whole trouble history of the indoor unit.
Do not push the
How to read displayed information
<7-segment display symbols>
0 1
23456789AbCdEFHJLP
<Corresponding alphanumerical letters>
0 1 2 3 4 5 6 7 8
Check code
+
TEMP.
2
9 A b C d E F
- 55 -
Indoor unit No. in which
trouble has occurred
TEMP. ON / OFF
TIMER SET FAN MODE
TIME SAVE VENT
FILTER
RESET TEST SET CL SWING/FIX UNIT LOUVER
Normal display is restored.
3 1
Steps to follow
1 2 3
H J L P