Hamworthy Purewell VariHeat 65he Installation, Comissioning And Servicing Instructions page 23

7.3.2 Safety Checks
7.3.2.1 To check for correct operation of the controller, with the boiler running, carefully disconnect the flame
probe lead from the flame probe.
The boiler will shutdown, attempt to relight once & then lock out causing Error code E133 to appear on the dis-
play. Carefully reconnect the probe lead then press the reset (Enter) button to recommence the light-up se-
quence.
7.3.2.2 With the boiler firing, turn off the gas isolating valve and the boiler will shut down in 'Blocked' ' mode show-
ing 'E132' on the display. Wait at least 30 Seconds before opening the gas Isolating valve when the block will
clear and the boiler will recommence the light-up sequence.
7.3.3 Flame Signal Assessment
The flame ionisation signal generated whilst the boiler is firing, can be viewed by using the following
procedure.
i
7.3.3.1 Pressing the info button on the display screen :
7.3.3.2 Press both up & down keys together for 5 seconds: To bring you into the 'Extended Info Mode'
7.3.3.3 Using up & down arrow keys scroll through B, C or D modes & select 'Mode C'.
7.3.3.4 Using the keys scroll through the options presented & select 'C1' to show the flame signal.
7.3.3.5 The value of the flame signal visible is set to read dc μA.
7.3.3.6 To return to the default fascia display press the mode button again.
7.3.4 - Adjusting the settings of the boiler
The desired Flow temperature setpoint can be set as follows:
7.3.4.1 Press the button.
7.3.4.2 With the boiler showing one of the Status Screens, press the Up / Down key for the screen showing the
actual flow temperature set point (factory set to a maximum flow temperature of 80°C).
7.3.4.3 By pressing the plus (+) & minus (-) keys will increase or decrease the setpoint in 1°C increments.
7.3.4.4 After changing the set-point to the desired value the 'Mode' key must be pressed to store this value and
return to the boiler's default display.
Should a set point higher than 80°C be required, please contact Hamworthy Heating, as programming for
a higher maximum outlet temperature is restricted by a factory set access code.
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HAMWORTHY HEATING LTD PUREWELL VariHeat he 500001170/K