Panasonic 26PEK1U6 Tech Data - Service Manual - Page 180
Overview, 5-2. Functions, Outdoor unit alarm history monitor
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5. Outdoor unit maintenance remote control 5-1. Overview What is the outdoor unit maintenance remote controller? Beginning with the DC-INV series of outdoor units, nonvolatile memory (EEPROM) is used in the outdoor unit PCB. In this way, the setting switches that were located on earlier PCBs have been converted to EEPROM data. This remote controller is an outdoor unit maintenance tool that is used to make and change the EEPROM settings. This remote controller can be used for checking the outdoor unit EEPROM settings and contents, and also can be used to monitor the outdoor unit alarm history and indoor/outdoor unit temperatures, and to check the status of the indoor unit connections (No. of units, operating status, etc.). Note: Because this tool does not function as a remote controller, it is used only during test runs and servicing. System diagram Outdoor unit maintenance remote controller Special service checker wiring (Optional, Servicing No:CV6231785082) Outdoor unit CZ-RTC2 Inter-unit control wiring (main bus) Remote controller Outdoor unit control PCB Indoor unit Indoor unit Remote controller Remote controller * The special service checker wiring is required in order to connect the outdoor unit maintenance remote controller to the outdoor unit PCB. * Even when the outdoor unit maintenance remote controller is connected, a separate remote controller or other control device must be connected to the indoor unit. 5-2. Functions Normal display functions (1) Functions: Button operations can be used to perform the following functions. • Start/stop of all indoor units • Switching between cooling and heating • Test run of all indoor units • High-speed operation of indoor units (Do not use with actual units. This may damage the devices.) (2) Display: The following can be displayed. • Alarm details display • No. of indoor/outdoor units • Unit Nos. of connected indoor/outdoor units • Indoor/outdoor unit operating status (blinks when an alarm occurs) • Indoor unit thermostat ON • Individual display of outdoor unit alarms • Outdoor unit compressor total operating time 5 • Outdoor unit oil sensor oil level • Outdoor unit total power ON time • Outdoor unit microcomputer version • Other Temperature monitor • Displays the indoor/outdoor unit sensor temperatures. Outdoor unit alarm history monitor • Displays the outdoor unit alarm history. Setting modes • Setting mode 1 and setting mode 2 are used to make the outdoor EEPROM setting. 5-2
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