Hisense AVWT-192FFFH User Manual

144
Troubleshooting
Alarm
Code
1 1
Abnormality of Thermistor for Indoor Unit Inlet Air Temperature
(Inlet Air Thermistor)
● The RUN indicator (Red) is ashing
● The indoor unit number, the alarm code, the unit model code and the connected number of indoor units are displayed on
LCD. Meanwhile, the indoor unit number and the alarm code are displayed on the 7-segment of outdoor unit PCB.
★
This alarm code is indicated when a short circuit (less than 0.24kΩ) or disconnection (more than 840kΩ) of the thermistor
is detected during the heating or cooling operation. The operation is automatically restarted when the malfunction is
removed.
This figure is applicable to the following thermistors.
1. Inlet Air Thermistor (THM1), 2. Liquid Pipe Thermistor (Freeze Protection) (THM3),
3.
Gas Pipe Thermistor (THM5), 4. Outlet Air Thermistor (THM2)
Yes
Yes
Connect it.
No
Faulty Thermistor
Faulty I.U. PCB
No
Is the thermistor
connected to THM1
(inlet) of I.U. PCB?
Is resistance of THM1
between 0.24kΩ and
840kΩ?
Cause Check Item
Action
(Turn OFF Main Switch)
Phenomenon
Faulty Inlet Air
Thermistor
Check resistance.
Replace thermistor
if faulty.
Fault
Check connection.
Connect wiring
correctly.
Incorrect Connection
Replace I.U. PCB
and check operation.
Replace I.U. PCB
if faulty.
Faulty I.U. PCB
Ambient Temperature (°F)
Thermistor Characteristics
Indication of Outdoor Unit PCB
(Alarm Code 11 ~ 19)
Indoor Unit No.
for Malfunction
Alarm Code
(11 ~ 19)
0
10
20
30
40
50
60
70
80
83
58
44
34
26
20.4
16
12.6
10
8
6.4
3.5
2.3
90
Thermistor Resistance(k�)
5 14 23 32 41 50 59 68 77 86 95 104 113 122 131 140
NOTE:

Hisense AVWT-192FFFH Specifications

General

Brand	Hisense
Model	AVWT-192FFFH
Category	Air Conditioner
Language	English