Vivax ACP-12CT35GECI, Service Manual

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Troubleshooting
9. Troubleshooting
9.1 Precautions before Performing Inspection or Repair
Take sufficient care to avoid directly touching any of the circuit parts without first turning off the power.
At times such as when the circuit board is to be replaced, place the circuit board assembly in a vertical position.
Normally,diagnose troubles according to the trouble diagnosis procedure as described below.(Refer to the check points in servicing
written on the wiring diagrams attached to the indoor/outdoor units.)
No. Troubleshooting procedure
1 Confirmation
2 Judgement by Flashing LED of Indoor/Outdoor Unit
3 How to Check simply the main part
9.2 Confirmation
(1)Confirmation of Power Supply
Confirm that the power breaker operates(ON) normally;
(2)Confirmation of Power Voltage
Confirm that power voltage is AC 220-230-240 10%. If power voltage is not in this range, the unit may not operate
normally.
9.3 Flashing LED of Indoor/Outdoor Unit and Primary Judgement
Be cautious during installation and maintenance. Do operation following the regulations to avoid electric shock and casualty or even
death due to drop from high a l titude.
* Static maintenance is the maintenance during de-energization of the air conditioner. For static maintenance, make sure that the unit
is de-energized and the plug is disconnected.
* Dynamic maintenance is the maintenance during energization of the unit. Before dynamic maintenance, check the electricity
and ensure that there is ground wire on the site. Check if there is electricity on the housing and connection copper pipe of the air
conditioner with voltage tester. After ensure insulation place and the safety, the maintenance can be performed.
Malfunction and mode display sheet
Display of indicator
Malfunction name Malfunction type
Double
8
Operation
indicator Cooling
indicator Heating
indicator
Malfunction protection of jumper cap Hardware malfunction C5 blinks 15 times
No feedback of indoor motor Hardware malfunction H6 blinks 11 times
Indoor ambient temperature sensor is
open/short- circuited
Hardware malfunction F1 blinks 1 times
Indoor evaporator temperature sensor is
open/short-circuited
Hardware malfunction F2 blinks 2 times
Liquid valve temperature sensor is
open/short-circuited
Hardware malfunction b5 blinks 19 times
Gas valve temperature sensor is
open/short-circuited
Hardware malfunction b7 blinks 22 times
Module temperature sensor is
open/short-circuited
Hardware malfunction P7 blinks 18 times
Outdoor ambient temperature sensor is
open/short- circuited
Hardware malfunction F3 blinks 3 times
Outdoor condenser inlet pipe temperature
sensor is open/short- circuited
Hardware malfunction A5
Outdoor condenser middle pipe
temperature sensor is open/short- circuited
Hardware malfunction F4 blinks 4 times
Outdoor condenser outlet pipe temperature
sensor is open/short- circuited
Hardware malfunction A7
Outdoor discharge temperature sensor is
open/short- circuited
Hardware malfunction F5 blinks 5 times