Panasonic WU-144MF1U9E 3-Way Service Manual - Page 86

Overview, Outdoor Unit Maintenance Remote, Controller Cz-rtc2 For 3-way Vrf

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1. Overview 3-WAY VRF SYSTEM Outdoor Unit Maintenance Remote Controller OUTDOOR UNIT MAINTENANCE REMOTE CONTROLLER (CZ-RTC2) for 3-WAY VRF ■ About the outdoor unit maintenance remote controller 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.). [Service Checker Section] 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. 3 System diagram Outdoor unit maintenance remote controller Special service checker wiring (Servicing No.: CV6231785082) Outdoor unit CZ-RTC2 Inter-unit control wiring Remote controller Ass'y Outdoor unit control PCB Indoor unit Indoor unit Operation manual included in package. 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. ● Ordinary remote controllers or other controller are still required for the indoor units, even when the outdoor unit maintenance remote controller is connected. 3 - 2

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1. Overview
3-WAY VRF SYSTEM
Outdoor Unit Maintenance Remote Controller
OUTDOOR UNIT MAINTENANCE REMOTE
CONTROLLER (CZ-RTC2) for 3-WAY VRF
■
About the outdoor unit maintenance remote controller
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.
Outdoor unit
Outdoor unit
control PCB
Indoor
unit
Indoor
unit
Remote
controller
Remote
controller
Outdoor unit maintenance
remote controller
System diagram
Special service checker wiring
(Servicing No.: CV6231785082)
Remote controller Ass’y
Operation manual included in package.
Inter-unit control wiring
●
The special service checker wiring is required in order to connect the outdoor unit maintenance remote controller
to the outdoor unit PCB.
●
Ordinary remote controllers or other controller are still required for the indoor units, even when the outdoor unit
maintenance remote controller is connected.
CZ-RTC2
[Service Checker Section]