Sanyo CHX06052 - Manual (Page 177)

5-3
Self-Diagnostics Function Table
1. Self-Diagnostics Function Table
5
E20 E16 E15 Check items
Check that the indoor unit power is turned ON.
Check that the inter-unit control wiring is connected correctly. (Check that there are no open
circuits, short circuits, terminal plugs, incorrect wiring to the remote controller terminals, or
similar problems.)
Check that the remote controller wiring is connected correctly. (Check that there are no open
circuits, short circuits, incorrect wiring to the inter-unit control wiring terminals, group control
crossover wiring, or similar problems.)
Check that the number of indoor units has been set correctly using switch S004 on the
outdoor unit control PCB.
Check that the amount of additional refrigerant charge is correct (if automatic address setting
is performed with the compressors ON).
Check that the refrigerant tubing connections are correct (if automatic address setting is
performed with the compressors ON).
Check that there are no problems with indoor unit sensors E1 and E3 (if automatic address
setting is performed with the compressors ON).
Check that there are no indoor units where the system address was already incorrectly set
by manual or automatic address setting.
sWhen automatic address setting is started from the outdoor unit control PCB or from the remote controller,
(SETTING) appears on the remote controller at units where the inter-unit control wiring and remote con-
troller wiring are connected correctly. LED 1 and 2 on the outdoor unit control PCB blink alternately.
sIn the case of indoor unit group control, if there is a mistake in the remote controller crossover wiring, addresses
may not be set even if (SETTING) appears.
sEven if alarm E15 or E16 appears, addresses are set at those indoor units which could be verified. The set
addresses can be checked using the remote controller.
v
Cause
E01
E02
E09
Remote controller
display
Nothing is
displayed. The remote controller is not connected correctly (power trouble).
The indoor unit power was cut off after automatic address setting was completed.
The remote controller is not connected correctly (remote controller receiving trouble).
The remote controller of an indoor unit where the indoor unit address is not set is inadvertently
operated. (Communications with the outdoor unit are not possible.)
The remote controller is not connected correctly (trouble with sending of the signal from the
remote controller to the indoor unit).
The indoor unit ceiling panel connector is not connected correctly.