Outdoor Unit Maintenance Remote Controller; About The Outdoor Unit Maintenance Remote Controller; Functions On The Ordinary Display; System Diagram - Panasonic U-8ME1E81 Service Manual

1. Outdoor Unit Maintenance Remote Controller

1-1. Overview

About the outdoor unit maintenance remote controller

The outdoor unit utilizes non-volatile 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
Ourdoor 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

1
Outdoor unit maintenance
remote controller
Special service checker wiring
(Servicing No.CV6231785082)
2
3
* Operation manual included in package.
The special service checker wiring is required in order to connect the outdoor unit maintenance remote
controller to the outdoor unit PCB.
4
Ordinary remote controllers or other controllers are still required for the indoor units, even when the outdoor
unit maintenance remote controller is connected.
1-2. Functions

Functions on the ordinary display

(1) Press the buttons to execute the following functions.
5
• All indoor units stop/start
• Cooling/heating change
• All indoor units test run
(2) Display: The following displays are possible.
• Alarm display
6
• No. of indoor/outdoor units
• Unit Nos. of connected indoor/outdoor units
• Operating status of indoor/outdoor units (Blinks when alarm occurs.)
• Indoor thermostat ON
• Display of individual outdoor unit alarms
7
• Total operating time of outdoor unit compressors
• Oil level of the outdoor unit oil sensor
• Total outdoor unit power ON time
• Outdoor unit microcomputer version, other information.
8
Outdoor unit
Outdoor unit
control PCB
Remote controller Assy
Inter-unit control wiring
Indoor unit
Remote
controller
6-2
2WAY SYSTEM
Service Checker
CZ-RTC2
Indoor unit
Remote
controller