Part 9 Troubleshooting; Precautions Before Performing Inspection Or Repair; Confirmation; Flashing Led Of Indoor/Outdoor Unit And Primary Judgement - Vivax ACP-12CT35GECI Service Manual

9. Troubleshooting

9.1 Precautions before Performing Inspection or Repair

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 altitude.
* 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.
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
normally.

9.3 Flashing LED of Indoor/Outdoor Unit and Primary Judgement

Malfunction name
Malfunction protection of jumper cap
No feedback of indoor motor
Indoor ambient temperature sensor is
open/short- circuited
Indoor evaporator temperature sensor is
open/short-circuited
Liquid valve temperature sensor
open/short-circuited
Gas valve temperature
open/short-circuited
Module temperature
open/short-circuited
Outdoor ambient temperature sensor is
open/short- circuited
Outdoor condenser inlet pipe temperature
sensor is open/short- circuited
Outdoor condenser
temperature sensor is open/short- circuited
Outdoor condenser outlet pipe temperature
sensor is open/short- circuited
Outdoor discharge temperature sensor is
open/short- circuited
40
10%. If power voltage is not in this range, the unit may not operate
Malfunction and mode display sheet
Malfunction type
Hardware malfunction
Hardware malfunction
Hardware malfunction
Hardware malfunction
is
Hardware malfunction
sensor is
Hardware malfunction
sensor is
Hardware malfunction
Hardware malfunction
Hardware malfunction
middle pipe
Hardware malfunction
Hardware malfunction
Hardware malfunction
Display of indicator
Double
Operation
8
indicator
C5 blinks 15 times
H6 blinks 11 times
F1
F2
b5
b7
P7
F3
A5
F4
A7
F5
Troubleshooting
Cooling Heating
indicator indicator
blinks 1 times
blinks 2 times
blinks 19 times
blinks 22 times
blinks 18 times
blinks 3 times
blinks 4 times
blinks 5 times