Sanyo SAP-KCRV243GJ, Техническое и сервисное руководство

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If the self-diagnostics function fails to operate
Check the indoor unit.
Is the fuse blown?
Replace the controller.
No indicators illuminate and the
indoor fan does not turn.
Check the power voltage.
Replace the circuit
board or the fuse.
<Checking the indoor and outdoor units>
Checking the outdoor unit
Control Check items (unit operation)
Apply the rated voltage between outdoor
unit terminals 1 and 2.
The control panel LED (red) must illuminate.
If there are no problems with the above, then check the indoor unit.
No.
1
Short-circuit the outdoor unit COM terminal
to the T-RUN terminal.
The compressor and fan motor must turn ON. 2
Checking the indoor unit
Control Check items (unit operation)
Set operation selector of indoor unit to
DEMO and start operation using the remote
controller. The rated voltage must be present between inter-unit cables 1 and 2.
Connect a 5k
Ω
resisto 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.
If there are no problems with the above, then check the outdoor unit.
No.
1
Using the TEST/T-RUN terminals
T-RUN
TEST/MV : Test run (compressor and fan motor turn ON.)
: Compresses time to 1/60th (accelerates
operation by 60 times faster than normal).
Fully opens the electric expansion valve.
TEST/T-RUN terminals
TEST/MV T-RUN COM
Checking the serial communications
short-circiut terminals 2 and 3 on
the indoor unit 3P terminal block.
Probable location of malfunction
Indoor unit circuit board failure
Initial self-
diagnostics
Failure (open circuit, contact failure, etc.)
in the inter-unit cable
*
Control 1
*
Control 2
Outdoor unit circuit board failure
Indoor unit circuit board failure
short-circiut terminals 2 and 3 on
the indoor unit 3P terminal block.
No change
Change: (1) and (3) illuminate,
and (2) flashes.
Change: (1) and (3) illuminate,
and (3) flashes.
Change: (1) and (3) illuminate,
and (2) flashes.
Change: (1) illuminates
(1) illuminate
(1) and (3) illuminate,
and (2) flashes.
Turn the power OFF before performing short circuiting work.
During the self-diagnostics check, the check results are the first indication when the operation switch is moved to OFF
while the indicators are flashing after power ON
*
DEMO (5 seconds)
*
ON.
So that the check can be made quickly, indicators flash at first communication after power ON.
Before performing the above checks, perform DEMO operation, and check that AC 220V is output terminals 1 and 2.
If it is not output, there is a failure related to the indoor unit power.
Normal
Blown