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10. P.C. BOARD EXCHANGE PROCEDURES
10-1. 4-Way Cassette type , Compact 4-Way Cassette type, Ceiling type
Points to Note When Replacing Indoor P.C. Board Assembly
The electrically erasable programmable read-only memory (hereinafter EEPROM,IC503, or IC10) mounted on an
indoor P.C. board holds important setting data, including the type and capacity codes intrinsic to the model (set
factory), as well as the line/indoor/group addresses, high ceiling adjustment setting and the like (during
either automatically or manually). Proceed with the replacement of an indoor P.C. board assembly
in accordance with the procedure described below.
After completion of the work, check the settings again, including the indoor unit No. and group header/follower
designation, and confirm the integrity of the refrigerating cycle by conducting a test operation, etc.
<Replacement procedure>
Method 1
If it is possible to turn on the indoor unit and read the setting data from the P.C. board to be replaced via a wired
remote controller -
Reading EEPROM data:
Procedure 1
Replacing P.C. board and turning on power:
Procedure 2
Writing EEPROM data in new EEPROM:
Procedure 3
Resetting power supply (applicable to all indoor units connected to remote controller in case of group operation)
Part code
Model type
P.C. board type
431-6V-447
MMU-AP
2H2UL series
1MH2UL series
1H2UL series
MCC-1570
431-6V-445
MMU-AP
MMC-AP
MCC-1402
Method 2
If it is not possible to read the setting data due to the failure of the EEPROM itself -
Replacing P.C. board and turning on power:
Procedure 2
Writing EEPROM data on basis of information supplied by customer (e.g. high ceiling adjustment setting and
optional connection setting):
Procedure 3
Resetting power supply (applicable to all indoor units connected to remote controller in case of group operation)
***
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installation,
at the
Содержание Carrier MMC-AP0181H2UL
Страница 11: ...11 2 CONSTRUCTION VIEWS EXTERNAL VIEWS 2 1 4 Way Cassette Type MMU AP0072H2UL AP0092H2UL AP0122H2UL ...
Страница 12: ...12 MMU AP0152H2UL AP0182H2UL ...
Страница 13: ...13 MMU AP0212H2UL MMU AP0242H2UL MMU AP0302H2UL ...
Страница 14: ...14 MMU AP0362H2UL MMU AP0422H2UL ...
Страница 15: ...15 2 2 Compact 4 Way Cassette Type MMU AP0071MH2UL MMU AP0091MH2UL MMU AP0121MH2UL ...
Страница 16: ...16 MMU AP0151MH2UL MMU AP0181MH2UL ...
Страница 153: ...153 11 EXPLODED VIEWS AND PARTS LIST 1 1 4 Way Cassette Type MMU AP0072H2UL AP0092H2UL AP0122H2UL ...
Страница 156: ...156 MMU AP0152H2UL AP0182H2UL AP0212H2UL AP0242H2UL AP0302H2UL ...
Страница 159: ...159 MMU AP0362H2UL AP0422H2UL ...
Страница 164: ...164 11 2 Compact 4 way Cassette Type MMU AP0071MH2UL AP0091MH2UL AP0121MH2UL AP0151MH2UL AP0181MH2UL ...
Страница 168: ...168 11 3 Ceiling Type MMC AP0181H2UL AP0241H2UL AP0361H2UL AP0421H2UL ...
Страница 174: ...174 MMK AP0153H AP0183H AP0243H ...