8-2. Test Run Procedure

Items to Check Before the Test Run

<Outdoor unit control PCB> Unit No. setting switch (S004)

Recheck the items to check before the test run.

Set the No. of indoor units.

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.

Are the inter-unit control wires

(Check the link wiring.) connected to more than 1 refrigerant system?

NO CASE 1

<Outdoor unit control PCB>

 

YES

 

Unit No. setting switch

 

Set the system address.

 

(S002 and S003)

 

 

 

 

 

 

 

 

 

 

 

 

When multiple outdoor units exist, disconnect the terminals

Refer to Fig. 8-4

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

 

PCBs except for 1.

 

 

 

 

 

 

Alternatively, move the sockets to the OPEN side.

 

 

 

 

YES CASE 2

 

 

 

 

 

 

Is it possible to turn ON the power only

 

 

for the 1 refrigerant system where the

 

 

 

test run will be performed?

 

Turn ON the indoor and

NOoutdoor unit power for that refrigerant system only.

NO

CASE 3B

Is it OK to start the compressors?

Turn ON the indoor and outdoor unit power.

*2

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.

Will automatic address setting be

 

 

Make necessary corrections.

Short-circuit the automatic address pin (CN51)

performed in Heating mode?

 

 

 

 

 

 

 

 

 

 

 

 

 

 

on the outdoor unit PCB for 1 second or longer,

 

 

 

 

 

 

 

 

 

 

YES

CASE 3A

 

Turn OFF the indoor and

 

then release it.

 

 

 

 

 

 

 

 

outdoor unit power

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Is it OK to start the compressors?

 

 

 

 

 

 

 

LED 1 and 2 blink alternately

 

 

Check the alarm contents.

 

 

(about 2 or 3 minutes).

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Turn ON the indoor and

 

 

 

 

 

NO

 

 

 

outdoor unit power.

 

 

 

 

 

 

Are LEDs 1 and 2 on the

*2

 

 

Make necessary

 

 

 

 

 

outdoor unit PCB OFF?

Short-circuit the automatic address

corrections

 

Refer to “Table of

 

 

 

 

 

pin (CN51) on the outdoor unit PCB

 

 

 

Self-Diagnostic Functions and

 

 

 

 

 

 

Description of Alarm Displays.”

 

YES

for 1 second or longer,

 

Turn OFF the indoor

 

 

 

 

 

 

then release it.

 

and outdoor unit

 

 

 

 

 

 

 

*3

 

*3

Start indoor and outdoor unit

Start indoor and outdoor unit

cooling operation.

heating operation.

LED 1 and 2 blink alternately.

LED 1 and 2 blink alternately.

Are LEDs 1 and 2 on the

NO

 

outdoor unit PCB OFF?

 

YES

Check the alarm

contents.

*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.)

Set the wired remote controller for test run.

Refer to the remote

 

 

NO

 

 

controller test-run

 

 

Does system operate?

settings.

 

 

 

Check and make corrections according to “Table of Self-Diagnostic Functions.”

YES

Return remote control to normal mode

End test run.

Fig. 8-3

69

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Image 69
Sanyo 85464359981002 installation instructions Test Run Procedure Items to Check Before the Test Run, Yes
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