6-266-1. OverviewWhat 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 locatedon earlier PCBs have been converted to EEPROM data. This remote controller is anoutdoor unit maintenance tool that is used to make and change the EEPROM set-tings.This remote controller can be used for checking the outdoor unit EEPROM settingsand contents, and also can be used to monitor the outdoor unit alarm history andindoor/outdoor unit temperatures, and to check the status of the indoor unit connec-tions (No. of units, operating status, etc.).Note: Because this tool does not function as a remote controller, it is used only dur-ing test runs and servicing.* The special service checker wiring is required in order to connect the outdoor unit maintenance remote controller tothe outdoor unit PCB.* Even when the outdoor unit maintenance remote controller is connected, a separate remote controller or other con-trol device must be connected to the indoor unit.6-2. FunctionsNormal 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• Outdoor unit total power ON time• Outdoor unit microcomputer version• OtherTemperature 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.CZ-RTC4Inter-unit control wiringSpecial service checker wiring(Servicing No.: CV6231785082)Remote controller Ass’yOperation manual included in package.IndoorunitRemotecontrollerIndoorunitRemotecontrollerOutdoor unitcontrol PCBOutdoor unitSystem diagram Outdoor unit maintenanceremote controllerAMP Air Conditioningwww.ampair.co.uk | sales@ampair.co.uk
