HAMWORTHY HEATING LTD
37
MILBORNE
500001130/J
Figure 8.6.6 Boiler module blocking errors (E) - auto reset
8.6.7 Controls Information
Controls information can be accessed by pressing the buttons in a prescribed sequence see figure 8.1.1
S1 : Press it in order to unlock the unit when a fault has occurred.
S2: To enter into the parameters and monitor mode of each single unit.
S3: Displays the running state of the different master circuits
S4 & S5: To increase decrease a certain value.
S6: To store new values.
8.6.8 Mode Display.
The D5 red LED turns on in case a fault occurs causing the permanent lock-out of one boiler module (Reset either
the Master or the relevant boiler module to restore normal operation).
The D4 green LED displays the presence of communication between the Master and individual boiler modules.
The 3 display LED’s U2, U3 and U4 display the following information:
8.7 Users Parameter Adjustments
The three following User Parameters can be changed
from the function ‘mode display’:
◊
High temperature heating circuit set-point
◊
Water circuit temperature set-point
◊
Low temperature heating circuit set-
point
Press S3 to display the listed values:
◊
High temp. heating circuit flow _T (pos. 1)
◊
Domestic Hot Water_T (pos. 2)
◊
Low temp. heating circuit flow_T (pos 4)
The following procedure will modify one of the
above values:
Press S2 to select the desired value,
the two right LED digits will flash.
Note:
if the value does not need changing, press S2 to
return to the mode display.
If the value needs to be modified,
press S4 and S5 until the desired value is displayed.
Press S6 to store the value. The chosen
value will stop flashing and the display will be
restored to the mode display.
Display Nr PC Nr
Fault
Action
E33
33
Polarity reversed (L~N)
Check and correct
E34 34
Reset key error - pressed more than 7 times in
30 mins
If after 40 mins, the error has not cleared,
check and replace the Slave board
E35
35
Differential water pressure switch error
Check the boiler flow rate and replace the
switch if necessary
E36
36
Internal error
Check and replace Slave board
E37
37
Flame detection error
Check and replace or clean the electrodes
E38
38
Flue sensor - short circuit
Check and replace flue sensor
E39
39
Flue sensor - open circuit
Check and replace flue sensor
E40
40
Supply frequency error
Main frequency is not 50Hz, check supply
E41
41
Internal error
Check and replace Slave board
E42
42
Flow temperature sensor - short circuit
Check and replace flow sensor
E43
43
Flow temperature sensor - open circuit
Check and replace flow sensor
E44
44
Return temperature sensor - short circuit
Check and replace return sensor
E45
45
Return temperature sensor - open circuit
Check and replace return sensor
E46
46
Flow sensor error—limit temp. exceeded
Check the flow rate through the boiler
E47
47
Return sensor error - limit temp. exceeded
Check the flow rate through the boiler
E48 48
Flue sensor error - limit temp. exceeded. With
this error the fan runs at maximum speed
Check the flow rate through the boiler, clean
the heat exchanger, water and gas side
E49
49
Poor or no earth bond
Check installation and replace Slave board
