SiENBE28-901 Troubleshooting
Air Cooled Refrigeration Condensing Unit 77
6.3 Checking Malfunction Codes by LED Lamps on PCB
1) Simple diagnosis by the LED error display
In Setting Mode 1-11, the error status of each component can be checked by reading the
blinking LED.
[Steps]
Operate the pushbuttons on the PCB (in Setting Mode 1) and malfunction codes will be
displayed by LEDs.
Follow the steps below to check your unit.
1. Press the MODE button (BS1). (Setting Mode 1 will be entered.)
2. Pressing the SET button (BS2) will go to item No.1 (see the list of output items).
3. Pressing the RETURN button (BS3) will display any error for item No.1 using the LED
(Normal: OFF, Error: Blinking).
4. Pressing the MODE button (BS1) will go back to the initial state.
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