Toshiba MMD-AP0071SH-C Service Manual page 49

11
TROUBLESHOOTING
New check code
1. Difference between the new check code and the current system
The displaying method of the check code changes in this model and after.
Check code in current system
Used characters Hexadecimal notation, 2 digits
Characteristics of code classification Few classification of communication/incorrect setup system
Block display Indoor P.C. board, Outdoor P.C. board, Cycle, Communication
<Display on wired remote controller>
• [ ] goes on.
• [UNIT No.] + Check code + Operation lamp (Green) flash
<Display on sensor part of wireless>
• Block display of combination of [ ] [ ] [ ]
<Display on indicater on wiress remote controller
receiver part>
• Unit No. and check code are displayed.
• In a case of error with auxiliary code, check code and
auxiliary code are displayed alternately.
New check code
Alphabet + Decimal notation, 2 digits
Many classification of communication/incorrect setup system
Communication/Incorrect setup (4 ways), Indoor protection,
Outdoor protection, Sensor, Compressor protection, etc.



 Display Classification

A Unused


C Central control system error


E Communication system error

 → F Each sensor error (Failure)
H Compressor protective system error
J Unused
L Setup error, Other errors
P Protective device operation
12
MAINTENANCE
For maintenance, be sure to turn off the main power switch.
Do not handle the buttons with wet hands; otherwise an electric shock may be caused.
<Daily maintenance>
Cleaning of air filter
1
If is displayed on the remote controller,
contact to service on maintenance professional to
cleaning the air filter.
2
Clogging of the air filter decreases cooling/
heating efficiency.
3
After cleaning, push .
display disappears.
[Air filter cleaning method]
1
Take out the air filter.
• When connecting a return air duct to the unit, cleaning method of the air filter differs according to the
construction of duct end. Please ask the constructor for construction of air duct.
2
Cleaning with water or vacuum cleaner
• If dirt is heavy, clean the air filter by tepid water with neutral detergent or water.
• After cleaning with water, dry the air filter sufficiently in a shade place.
3
Mount the air filter.
• Attach the filter to the main unit.
4
Push .
• display disappears.
CAUTION
1,
2
TEMP.
TIMER SET FAN
TIME SWING/FIX
FILTER
3
RESET TEST SET CL UNIT
CODE No.
ON / OFF
MODE
VENT