Alpha InTec 30C Installation And Servicing Instruction page 7

Pump function modes - To see the current operation mode press button (1) once.
The circulator has various built-in operation modes, however the operation mode should be selected according to the boiler model.
InTec 30-34C the default setting is constant curve speed 3.
The table below shows the possible mode settings.
Pump LEDs
Mode setting
To change operation mode press and hold the button until the display flashes, the button can then be pressed sequentially to
scroll through the functions modes. When the required function is selected this mode will be stored and the display will revert
to show the current power level.
Pump function lock - The button has a feature that locks the setting to prevent accidental modification, to lock the pump
setting press button (1) for over 10 seconds (the current configuration flashes), the lock is confirmed by all LEDs on the
control panel flashing. To unlock the button press again over 10 seconds.
Pump By-pass - The boiler is supplied with by-pass fully opened. If necessary, the by-pass can be regulated to system
requirements from maximum (by-pass open) to minimum (by-pass closed). Adjust using a flat head screwdriver, turn
clockwise to open the by-pass; turn anti-clockwise to close it.
Pump fault display - In the event of malfunction the LEDs provide information on the pump operation status as shown in the
following table:
Pump LEDs
Decription
(first one red)
R On
Pump blocked
Y Off
Y Off
Y Off
Y On
R On
Y Off
Abnormal situation
(the pump continues to run)
Y Off
Low power supply voltage
Y On
Y Off
R On
Electrical fault
Y Off
(pump blocked)
Y On
Y
Off
Y Off
G On G On
Y On Y On
Y On Y On
Y Off Y On
Y Off Y Off
Do not use Constant curve
speed 2
Diagnostics
The pump cannot restart
automatically due to an anomaly
Voltage out of range
The pump is locked due to
power supply too low or
serious malfunction
G
G On
Y
Y On
Y
Y On
Y
Y On
Y
Y On
Constant curve Constant curve
speed 3 ( default ) speed 4
Remedy
Wait for pump to make automatic release
attempts or manually release motor shaft
using screw in centre of the head
If anomaly persists replace the pump
Check power supply
Check power supply, if anomaly persists
replace the pump
Alpha InTec 30C and 34C - Technical Data
On
On
On
Off
On
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