Service Manual
4
Failure modes of PSK.P4 front panel.
Simultaneous blinking of all indicators means that one (or both) temperature sensors failed or are disconnected.
By using the right arrow the one could review the return or flow temperature. If the main indicator shows E replace the
adequate temperature sensor. In case of return temperature sensor failure the boiler will run in the failure mode and the
heating temperature will be computed by using difference between main temperature settings and the supply temperature.
Detection of the supply temperature sensor failure blocks the heating of the boiler.
2. Control panel settings
PSK.P4 front panel service mode configuration.
To set the service modes turn off the boiler by pressing and holding the power
button. Then press and hold the right
arrow button and simultaneously press the power button. Use the upper and lower arrow buttons to change the parameter
value or mode. Use the right arrow button to move to the next parameter.
Parameter
Display
Description
Circulating pump mode
PA
Automatic mode
Pr
Continuous working mode
Power board
G1 ÷ G6
Number of supplying heating elements
Temperature ranges
Po
Floor heating type 30-60°C
(with no possibility to heat the DHWT)
no
Standard type 40-85°C
Three phase mains supply
symmetry
3F
No symmetry detection
3F.
Symmetry detection is active. The K indicator is ON. The boiler stops heating the system if phase is missing
Cascade mode
r0
Separate standard mode
r1
Cascade working mode
Boiler identification number
A1 ÷ A8
Set the A number exclusively to identify each boiler.
Position A1 boiler no 1 ... A8 boiler no 8
DHWT loading temperature value
0
Heating of the DHWT is blocked.
The DHWT indicator is off.
50 ÷ 85
DHWT temperature range.
The DHWT indicator is on.
Power of the heating box
1 - 36, indicator
'kW' lits
Set the proper number according to the power of the heating box
and the number of active heating elements
All the settings are stored automatically. After settings are changed turn off device by pressing and holding the power button
for 3 sec. Then turn the boiler on again. The boiler will work with the new settings.
Table 1.
