Panasonic 26PEK2U6 26PEK2U6 Service Manual - Page 271

In the case of CZ-RTC4 5. Outdoor unit maintenance remote control 5-7. Overview n About the outdoor unit maintenance remote controller [Service Checker Section] The outdoor unit utilizes nonvolatile memory (EEPROM) on its PCB. This allows EEPROM data to replace the setting switches that were present on previous PCBs. The outdoor unit maintenance remote controller is used to set and change these EEPROM data. In addition to setting and checking the outdoor unit EEPROM data, this remote controller can also be used to monitor the outdoor unit alarm history, monitor the various indoor and outdoor temperatures, and check the indoor unit connection status (number of units, operating mode, etc.). " NOTE Outdoor unit maintenance remote controller does not function as an ordinary remote controller. It is therefore only used for test runs and during servicing. System diagram Outdoor unit maintenance remote controller Special service checker wiring (Servicing No.: CV6231785082) Outdoor unit CZ-RTC4 Inter-unit control wiring Interface for outdoor unit Outdoor unit maintenance control PCB remote controller Remote controller Ass'y (Servicing No.: " CV6231616171) Operation manual included in package. Indoor unit Indoor unit Remote controller Remote controller l The special service checker wiring is required in order to connect the outdoor unit maintenance remote controller to the outdoor unit PCB. l Ordinary remote controllers or other controller are still required for the indoor units, even when the outdoor unit maintenance remote controller is connected. 5 5-11