23
3.4
Fault / Service Indications – Requiring Operator Intervention.
1 & 2
Fault stop:
Once the problem has been cleared the fault can be re-set by one of the
following procedures.
i)
Units fitted with an Alpha-numeric display:
Power the unit right off, using the local
isolator (not the unit on/off switch), waiting ten seconds, then re-applying power. When the
message “Cylinder x drain fault” is once again displayed press the o.k. button, and the unit
will revert back to it’s operational state.
ii)
Units not fitted with a display:
Power the unit right off, using the local isolator (not the
unit on/off switch), waiting ten seconds, then re-applying power. When the constant amber
“drain fault” indication is showing, press the unit “fault reset” button, which is located on the
fascia above the “Vapac” Logo.
2
High Temperature Fault:
When the cylinder has cooled down, investigate the reason for the
“over temperature” condition, paying particular attention to the feed water supply. Manually
drain the cylinder, and carry out a cylinder inspection (see section 2.1.1 of the “Installation,
Operation & Maintenance manual”). When complete, reset the high temperature cut-out on
top of the cylinder and re-start the unit.
4
Float Switch Fault: Will be seen if the top float switch is made, but the lower switch is open.
If seen the float switch and associated wiring should be inspected, cleaned and/or replaced
as required.
5
Service Interval Expired:
Will be seen if the unit has run for a period exceeding the service
interval, which will depend on the quality of the site water supply (see table below).
Water Type
Service Interval
Hours
De-min / De-ionised
5000
Softened 2500
Pot. Low
2500
Pot. Med
1000
Pot. High
500
If this indication is seen the cylinder should be inspected as soon as possible
User LED State
Description
1 AMBER
Drain
Fault
2
AMBER Flashing
1 second period
Feed Fault
3
AMBER Flashing
2 second period
Over temperature Fault
4
GREEN/AMBER Flashing
1 second period
Float Switch Fault
5
GREEN Flashing
1 second period
Service Interval expired or low output.
6
GREEN Flashing
2 second period
Periodic Flush/Periodic Drain/Manual Drain/Auto Flush in progress
7
GREEN
Periodic Drain/Periodic Flush/Manual Drain completed.
8
RED/AMBER
1 second period
Constant Output Active/Full Output via UCP3 (Master cylinder only)
