Service Checker

1. Outdoor Unit Maintenance Remote Controller

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

 

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

 

 

 

1

Outdoor unit maintenance

 

 

 

remote controller

Outdoor unit

Inter-unit control wiring

 

 

 

 

 

 

 

 

 

Special service checker wiring

 

 

 

2

 

Outdoor unit

Indoor unit

Indoor unit

 

control PCB

 

 

 

 

 

Remote controller Assy

 

 

 

3

 

 

Remote

Remote

* Operation manual included in package.

 

controller

controller

 

 

 

 

 

The special service checker wiring is required in order to connect the outdoor unit maintenance remote controller

4

to the outdoor unit PCB.

 

 

 

Ordinary remote controllers or other controllers are still required for the indoor units, even when the outdoor unit

maintenance remote controller is connected.

 

 

 

 

 

 

2. Functions

 

 

 

5

Functions on the ordinary display

 

 

 

(1) Press the buttons to execute the following functions.

 

 

 

• All indoor units stop/start

 

 

 

 

• Cooling/heating change

 

 

 

 

• All indoor units test run

 

 

 

 

(2) Display: The following displays are possible.

 

 

6

• Alarm display

 

 

 

• 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

 

 

 

7

• Display of individual outdoor unit alarms

 

 

 

• 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

6-2

 

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Image 104
Sanyo KHX2452 Outdoor Unit Maintenance Remote Controller, System Diagram, Functions Functions on the ordinary display