Vivax ACP-24COFM70GEI, Service Manual

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1.General use part
Notice
1. Preparations before Repair
Step 1: Firstly, determine the model of unit to be repaired and find out the model and material code of the main damageable
components, particularly the outdoor controller.
Step 2: According to the fault described by the user, make a preliminary judgment on the possible components that might be repl
Bring them with you for repair.
Step 3: To repair the VF unit, you need to bring with you the multimeter and clamp-on ammeter except the usual tools as screwdriver and
spanner.
2.To avoid electric shock during repair, do not touch any term inal before it is measured that the voltage between module P and N is less
than 50V.
Breaker trippe
or fuse burnt out
When the breaker is set ON, it will
trip at once
When the unit is turned on, the
breaker will trip in a few minutes
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Insulation malfunction of line or componen
in the air conditioner. Insulation breakdow
occurs after radiation, which causes short
circuit or electricity leakage. Measure
insulating resistance or use one-by-on
elimination method;
Malfunction of fuse. Replace it.
Check power supply circuit
No power supply
The power plug is not or poorly
connected
Check and plug well plug, make
loosen contact firm
Controller fuse is burnt out
Change control fuse
Loose or poor contact of transformer
connection, or transformer malfunction
Secure the wire connection: measure
the output voltage of the transformer
and replace it if the value is wrong
The controller is broken
Replace the controller
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Loose or poor connection of receiving
head
Receiving head is broken
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First press the "AUTO" button of the
manual switch. If there is no response,
check according to the above method;
if it is normal after the button is
pressed, check if the installation
location and wire connection of the
receiving head are correct. If correct,
replace the receiving head, or the
remote controller.
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2. Malfunction display part
When AC having malfunction or protection, indoor unit displayer or indicator will display the corresponding codes, indicator on
outdoor unit mainboard also display, the detailed contents has been discribed pls refer to the prior function part
for more information, when protection or malfunction removed and display resume to normal. Partly display malfunction
analysis or processing:
3.Before or after the maintenance, should examine the the user power socket, wiring board of indoor or outdoor unit, there are all insert pieces
on the mainboard (especially the outdoor unit mainboard, power module and PFC module), whether loosen or not.