Sanyo AHX0952 User Manual

Page 69

YES

Make necessary corrections.

Check the alarm

contents.

Check the alarm contents.

Turn OFF the indoor and

outdoor unit power

CASE 1

CASE 2

CASE 3B

CASE 3A

YES

Recheck the items to check before the test run.

Are the inter-unit control wires

connected to more than 1 refrigerant

system?

Is it possible to turn ON the power only

for the 1 refrigerant system where the

test run will be performed?

Will automatic address setting be

performed in Heating mode?

Is it OK to start the compressors?

Turn ON the indoor and

outdoor unit power.

Short-circuit the mode change pin

(CN50) on the outdoor main unit PCB.

At the same time, short-circuit the

automatic address pin (CN51) for 1

second or longer, then pull it out.

Short-circuit the automatic address

pin (CN51) on the outdoor unit PCB

for 1 second or longer,

then release it.

Short-circuit the automatic address pin (CN51)

on the outdoor unit PCB for 1 second or longer,

then release it.

Start indoor and outdoor unit

cooling operation.

LED 1 and 2 blink alternately.

Start indoor and outdoor unit

heating operation.

LED 1 and 2 blink alternately.

LED 1 and 2 blink alternately

(about 2 or 3 minutes).

Is it OK to start the compressors?

Turn ON the indoor and

outdoor unit power.

Turn OFF the indoor

and outdoor unit

Turn ON the indoor and

outdoor unit power for that

refrigerant system only.

Are LEDs 1 and 2 on the

outdoor unit PCB OFF?

Are LEDs 1 and 2 on the

outdoor unit PCB OFF?

Set the No. of indoor units.

Set the system address.

When multiple outdoor units exist, disconnect the terminals

extended from the shorted plugs (CN33) at all outdoor main unit

PCBs except for 1.

Alternatively, move the sockets to the OPEN side.

Unit No. setting switch

(S004)

Unit No. setting switch

(S002 and S003)

Refer to Fig. 8-4

(Check the link wiring.)

Refer to “Table of
Self-Diagnostic Functions and
Description of Alarm Displays.”

*2 A minimum of 5 hours must have passed after the

power was turned ON to the outdoor unit.

*3 All indoor units operate in all refrigerant systems

where the power is ON.

Check that test run preparation is OK.

(Do not allow the short-circuited pins to remain short-circuited.)

Refer to the remote

controller test-run

settings.

Set the wired remote controller for test run.

Does system operate?

Return remote control to normal mode

Check and make corrections according to

“Table of Self-Diagnostic Functions.”

End test run.

Make necessary

corrections

8-2. Test Run Procedure

Items to Check Before the Test Run

1. Turn the remote power switch on at

least 5 hours before the test, in order to
energize the crank case heater.

2. Turn the outdoor service valves (2

locations) to the full-open positions.

●

Use caution when making the settings. If
there are duplicated system addresses,
or if the settings for the Nos. of the
indoor units are not consistent, an alarm
will occur and the system will not start.

●

These settings are not made on the
indoor unit PCB.

Fig. 8-3

07-056 Mini_ECOi_II_NA 3/19/07 2:41 PM Page 69