IDEAL imax W45 Installation And Servicing Manual page 26

35 BASIC CONTROLS DISPLAY
Sequence Boiler Status
a
DHW valve energised
0
Standby, no heat request
1
Pre-purge, post purge
2
Ignition
3
Burner on in CH mode
4
Burner on in DHW mode
5
Waiting for air pressure switch to open or close
6
Burner off because a set value has been
reached
7
Pump overrun in CH mode
8
Pump overrun in DHW mode
During the operation of the
can be determined by the display.
1. Normal Operation Mode
The unit will either be in standby or in operation. The first
digit on the display shows the boiler status (see table). The
last 3 digits show the flow temperature.
2. Blocking Mode
The boiler will enter blocking mode under certain fault
conditions. Whilst in blocking mode the burner is switched
off. Once the fault conditions are clear the boiler will
automatically reset itself. In blocking mode the display will
alternate between showing a '9' in digit one, along with the
flow temperature in digits 2, 3 and 4 e.g.
9 9 6
26
INSTALLATION
, the status of the appliance
Followed by the blocking code 'bxx'. Refer to page 52 for
Blocking Code references.
6 1 8
3. Error Mode
In error mode the display will flash on and off with the
error code shown.
E 3 6
Refer to page 50 for error codes.
The boiler will enter error mode under certain fault
conditions. The unit will be inoperative until the fault is
rectified. The reset button is used to reset the boiler
control module after an error has occurred.
Self Check and Anti-sieze Modules
After switching on the mains power or after a reset, the
boiler performs a selfcheck. i.e. the DHW valve is
energised and the pump is switched on for 10 seconds.
This cycle repeats itself every 24hrs, as long as no heat
request is given in 24hrs.
CH/DHW Systems
In standby mode pressing and holding the '+' button turns
the CH system on/off.
In standby mode pressing and holding the '-' button turns
the DHW system on/off.
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Installation & Servicing