Troubleshooting - TESY HPWH 2.1 200/260 U02 Instructions D'installation Et De Maintenance

The integrity of the magnesium anodes must be checked at least every two years (even better if checked
on an annual basis). The manufacturer does not bear the responsibility for all consequences caused by
not obeying the instructions, given hereby.
10.5. Emptying the boiler
It is advisable to drain the water from inside the boiler if the boiler is idle for a certain period of time, especially in low
temperatures.
Close tap 2 (Fig. 8). Then open the tap hot water in the bathroom or kitchen which one is closer to the tank. Next step is
to open draining tap 8(Fig. 8).
N.B.: It is important to empty the system in case of low temperatures in order to avoid the water
freezing.

11. TROUBLESHOOTING

In case of problems of equipment performance, without the occurrence of any of the alarms or errors described in
the relative paragraphs, it is advisable to check to see if the problem can be easily solved by checking the possible solutions
specified in the table below prior to seeking technical assistance.
Problem
The heat pump does
not work
The compressor and/or the fan do not work
11.1. 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/
Error
code
Malfunction
Standby
Normal running
Lower tank
water temp. P1
sensor failure
Upper tank
water temp. P2
sensor failure
Evaporator coil
temp. sensor P3
failure
LED indicator
Dark
Bright
☆●
(1flash 1 dark)
☆☆●
(2 flashes 1 dark)
☆☆☆●
(3 flashes 1 dark)
Possible causes
There is no electricity;
The plug is not correctly inserted in the socket.
The set safety period of time has not finished;
The scheduled temperature has been reached.
Possible reasons
1) The sensor
open circuit
2) The sensor
short circuit
3)PCB board
failure
1) The sensor
open circuit
2) The sensor
short circuit
3) PCB board
failure
1) The sensor
open circuit
2) The sensor
short circuit
3) PCB board
failure
27
Corrective actions
1) Check the sensor
connection
2) Replace the sensor
3)change the PCB board
1) Check the sensor
connection
2) Replace the sensor
3) change the PCB board
1) Check the sensor
connection
2) Replace the sensor
3) change the PCB board