PREMIER M PLUS INSTALLATION MANUAL
Approved Document No: GLT.MAN-111
PAGE
15
Issue : 2.8 Author: NJ Date: 23/07/2012
resistance is greater than 0.9 ohm. These batteries would then need to be replaced.
10.4 EARTH FAULTS
An EARTH fault indicates that something is shorting to earth (usually through the cable screen). Disconnect the earth screens one at
a time to determine the problem line.
(Note: connecting other equipment , e.g. an oscilloscope , to the panel can give an earth fault.)
The voltage between battery –Ve and earth should be 15-16 volts. If it is not, the voltage measured should indicate what is shorting
to earth.
Note that the M plus can monitor for earth faults through the motherboard, or through the PSU. They should not both be set to
monitor as this could report a fault. The recommended setting it to monitor via the motherboard.
10.5 SOUNDER FAULTS
Check that the correct END of Line resistor has been fitted (10K – brown, black, orange, gold).
Check that all sounder fuses are OK (FS4, FS5,FS7 & FS8 – 400mA QB).
If working on an existing installation, check that the devices are polarised (See Page 5).
Check cable continuity (Remove from panel and measure continuity - should read 10K).
HINT: Disconnecting the sounder wiring & fitting 10K EOL at the panel will confirm whether the panel or the wiring/sounders are
the cause of the fault.
10.6 REPEATER FAULTS
Check that the power and RS485 connections between the panel and repeater are correct.
Check The AUX supply fuse in the panel (FS6 – 250mA).
Check the supply fuse in the repeater (FS1 – 500mA).
10.7 F.A.R.E. FAULTS
Check that the correct END of Line resistor has been fitted. (10K – brown, black, orange, gold).
Check there are no open or short circuits on the F.A.R.E. line.
Check that the fuse is OK (FS3 – 100mA QB).
