Malfunctioning Of The Unit And Error Codes - HTW VAW Serie Manual De Usuario E Instalacion

Malfunctioning of the unit and error codes

When an error occurs or the protection mode is set automatically, the circuit board and the wired
controller will both display the error message.
Protection/
Malfunction
Standby
Normal
running
Lower tank
Water temp.
sensor failure
Upper tank
Water temp.
sensor failure
Evaporator
coil temp.
sensor failure
Return air
temp sensor
failure
Ambient
temp. sensor
failure
Error LED
code indicator
Dark
Bright
PP1
☆●
(1flash 1
dark)
PP2
☆☆●
(2
flashes 1
dark)
PP3
☆☆☆●
(3
flashes 1
dark)
PP4
☆☆☆☆
● (4
flashes 1
dark)
☆☆☆☆
PP5
☆
●
(5
flashes 1
dark)
Possible reasons
The sensor
1.
open circuit
The sensor
2.
short circuit
The sensor
1)
open circuit
The sensor
2)
short circuit
The sensor
1.
open circuit
The sensor
2.
short circuit
The sensor
-
open circuit
The sensor
-
short circuit
The sensor
(1)
open circuit
The sensor
(2)
short circuit
31
Corrective
actions
Check
1)
the sensor
connection
Replace the sensor
2)
- Check
the sensor
connection
Replace the sensor
-
- Check
the sensor
connection
Replace the sensor
-
· Check
the sensor
connection
Replace the sensor
·
- Check
the sensor
connection
Replace the sensor
-