Fault Detection / Indication; Fault Detection; Status Indication - Main Pcb; Status Indication - Secondary Pcb - Heatstore HSCFH60WX Installation And Operating Manual

9. Fault detection / indication

9.1 Fault detection

Heaters are equipped with electronic fault
detection. In the event of a fault being
detected, heater will show the nature of the
fault by flashing status LED located at the front
of the heater. The LED will flash one of the
sequences as shown in the table below. The
sequence is repeated every 5 seconds.
Number of
flashes
1 Overheating detected
Response: Power reduced until
heater cools down
2 Temperature measurement fault
Response: Intelligent speed con-
trol disabled, fan speed increased
3 Power not detected when heat
switched ON
Main PCB
Response: Fan operates as nor-
mal
Possible causes: missing phase,
blown fuse, faulty electronics
4 Problem with motor
Response: Heater will not work
5 Power detected when not
switched ON
Response: Fan runs continuously
6 Internal communication error
Response: Heater will not work

9.2 Status indication - main PCB

There are 2
LEDs on the
RJ45 connectors
indicating
that the power
is available. If
the heater is in
stand-by mode,
the green LED is ON. If the heater is switched
ON the orange LED is indicating that the
auxiliary power is available for the electronic.

9.3 Status indication - secondary PCB

For fault diagnostic being carried out by a
competent person there is an additional fault
indication on the secondary PCB.
51000241 Issue 02
Fault
A green LED on the secondary PCBs shows
that there is power available. The red LED
will flash one of the sequences as shown in
the table below. The sequence is repeated
every 5 seconds.
Secondary PCB
Number
of flashes
1 Power measurement when triacs
switched off:
Response: Auto run motor
2 Motor fault
Response: Disable heating
3 Triac heatsink overheat:
Response: Reduce heating
4 Low power measurement when
triacs switched on:
Causes: Thermal cut-out operat-
ed, blown fuse, missing phase
9.4 Over heat protection reset
The heater is equipped with electronic over
heat protection and also resettable over
temperature cut-outs. There are two cut-
outs located on the top of the heating
element. In the unlikely event of electronic
failure, the mechanical cut-outs will switch
off power to the heating element. In order
to reset cut-outs, isolate the heater from
power and leave heater to cool down.
The cause of cut-outs operating should be
investigated before resetting as the only
time the mechanical cut-out operates is
when electronics can't protect heater from
overheating.
14
Fault