Argo ASMI50HG Technische Daten & Servicehandbuch - Seite 15

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■ If the self-diagnostics function fails to operate

■ Checking the indoor unit

No.

Set operation selector of indoor unit main

body to DEMO and start operation using the

remote controller.

● If there are no problems with the above, then check the outdoor unit.

■ Checking the outdoor unit

No.

Apply the rated voltage between outdoor

unit terminals 1 and 2.

Short-circuit the outdoor unit COM terminal

to the T-RUN terminal.

● If there are no problems with the above, then check the indoor unit.

● Using the TEST/T-RUN terminals

T-RUN

TEST/MV : Compresses time to 1/60th (accelerates

Check the indoor unit.

Is the fuse blown?

Normal

Replace the controller.

Control

: Test run (compressor and fan motor turn ON.)

operation by 60 times faster than normal).

Fully opens the electric expansion valve.

• No indicators illuminate and the

indoor fan does not turn.

• Check the power voltage.

Blown

Replace the circuit

board or the fuse.

Check items (unit operation)

• The rated voltage must be present between inter-unit cables 1 and 2.

• Connect a 5 kΩ resistor between inter-unit cables 2 and 3. When the

voltage at both ends is measured, approximately 12–15 V DC must

be output and the needle must fluctuate once every 8 seconds.

In addition, insert an LED jig and check that the LED flickers once

every 8 seconds.

Check items (unit operation)

• The control panel LED (red) must illuminate.

• The compressor and fan motor must turn ON.

TEST/T-RUN terminals