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5-4. Test operation of indoor unit
Check function for operation of indoor unit (Functions at indoor unit side)
This function is provided to check the operation of the indoor unit singly without communication with the remote
controller or the outdoor unit. This function can be used regardless of operation or stop of the system.
However, if using this function for a long time, a trouble of the equipment may be caused. Limit using this function
within several minutes.
[How to operate]
1) Short-circuit CHK pin (CN71 on the indoor P.C. board).
The operation mode differs according to the indoor unit status in that time.
Normal time: Both float SW and fan motor are normal.
Abnormal time: Either one of float SW or fan motor is abnormal.
2) Restricted to the normal time, if short-circuiting DISP pin (CN72 on the indoor P.C. board) in addition to
short-circuit of CHK pin (CN71 on the indoor P.C. board), the minimum opening degree (30 pls) can be set
to the indoor PMV only.
When open DISP pin, the maximum opening degree (1500 pls) can be obtained again.
[How to clear]
Open CHK pin. While the system is operating, it stops once but automatically returns to operation after several
minutes.
• To exchange the indoor PMV coil, set the indoor PMV to Max. opening degree.
• For the detailed positions of CHK pin (CN71 on indoor P.C. board) and DISP pin (CN72 on indoor P.C. board),
refer to the indoor P.C. board MCC-1570.
Short-circuit of CHK pin
Normal time
Abnormal time
DISP pin open
DISP pin short circuit
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Indoor PMV (*)
Max. opening degree (1500 pls)
Min. opening degree (30 pls)
Min. opening degree (30 pls)
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Содержание MMC-AP0154H-E(-TR)
Страница 144: ... 144 9 Exploded Diagram Service Parts List 9 1 1 way cassette type YH MMU AP0074YH AP0094YH AP0124YH ...
Страница 145: ... 145 ...
Страница 149: ... 149 9 2 1 Way cassette type SH 4 2 0 P A 8 1 0 P A 5 1 0 P A ...
Страница 156: ... 156 MMU AP0056MH ...
Страница 159: ... 159 9 4 Slim duct type MMD AP0054SPH AP0074SPH AP0094SPH AP0124SPH AP0154SPH AP0184SPH ...
Страница 162: ... 162 MMD AP0056MH ...
Страница 165: ... 165 9 5 Concealed duct standard type MMD AP0074BH AP0094BH AP0124BH AP0154BH AP0184BH ...
Страница 166: ... 166 ...
Страница 169: ... 169 MMD AP0244BH AP0274BH AP0304BH AP0364BH AP0484BH ...
Страница 170: ... 170 ...
Страница 173: ... 173 MMD AP0564BH ...
Страница 174: ... 174 ...
Страница 177: ... 177 E Parts ...
Страница 179: ... 179 9 6 Concealed duct high static pressure type MMD AP0184H AP0244H AP0274H AP0364H AP0484H ...
Страница 183: ... 183 MMD AP0724H AP0964H ...
Страница 184: ... 184 ...
Страница 187: ... 187 9 7 Ceiling type MMC AP0154H AP0184H AP0244H AP0274H ...
Страница 190: ... 190 MMC AP0364H AP0484H ...
Страница 194: ... 194 9 8 Floor standing type MMF AP0154H AP0184H AP0244H AP0274H ...
Страница 195: ... 195 MMF AP0154H AP0184H AP0244H AP0274H ...
Страница 198: ... 198 MMF AP0364H AP0484H AP0564H ...
Страница 199: ... 199 MMF AP0364H AP0484H AP0564H ...
Страница 203: ... 203 9 9 Floor standing concealed type MML AP0074BH AP0094BH AP0124BH AP0154BH AP0184BH ...
Страница 206: ... 206 MML AP0244BH ...
Страница 209: ... 209 9 10 Floor standing cabinet type MML AP0074H AP0094H AP0124H AP0154H AP0184H ...
Страница 210: ... 210 MML AP0074H AP0094H AP0124H AP0154H AP0184H ...
Страница 213: ... 213 MML AP0244H ...
Страница 214: ... 214 MML AP0244H ...