Copyright Pyroban Ltd. Issue 1 Page 25 of 32
Part number PM1083ENG
T
ROUBLE SHOOTING GUIDE
If the Control unit power indicator is not illuminated check
•
power Isolator Switch is in the correct position
•
supply fuse has not blown
The software performs on-going system integrity checks. If a fault is detected the system goes
to a safe shutdown mode with a solid book symbol and a code indicating the type of failure on
the 7 segment status indicator.
The table below shows the types of failure and possible corrective actions.
7 segment
status
indicator
Type of fault
Corrective action – in each case
power the system down and re-apply
power to attempt to clear the fault. If
the fault persists take corrective
action as below in the order shown
1
•
Head input not present
•
Check gas detection head lead
is correctly connected.
•
Replace gas detection head.
•
Replace Control Unit.
2
•
Not applicable
•
Not applicable
3
•
RAM failure
•
Replace Control Unit.
4
•
EPROM failure
•
Replace Control Unit.
5
•
EEPROM failure
•
Replace Control Unit.
