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C-TEC EP203 User Manual

C-TEC EP203
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EP203 AUTOMATIC EXTINGUISHER PANEL
Page 36 of 45 • EP203 AUTOMATIC EXTINGUISHER PANEL INSTALLATION MANUAL • Approved Document No. DFU0002032 Rev 4
Sounder Faults
All three alarm sounder circuits are monitored for open and short circuit faults (unless
disabled, or in an alarm condition).
An open, or short-circuit fault on a sounder circuit is indicated by the following:
Internal panel sounder activates
General Fault yellow LED flashes
Sounder Fault yellow LED flashes
LCD unit displays the specific fault (e.g. Sounder circuit 1 O/C fault, Sounder
circuit 2 S/C fault).
To determine w hich o f the panel s th ree sounder circ ui t s i s fa ul ty
1. Disconnect each sounder circuit from the Main Control PCB in turn and measure the
resistance between the two wires. A healthy circuit will display only the end-of-line
resistor value. Any other resistance value signifies a fault.
2. If the readings from all sounder circuits are correct, take their end-of-line resistors
and connect them to the sounder circuits at the panel terminals. If the fault persists,
the Main Control PCB is faulty and must be replaced.
3. If a sounder circuit fault is detected, correct the fault and reconnect the sounder
circuit. The sounder fault will automatically clear within 60 seconds.
Note: If the sounder circuit is shorted and the alarm voltage applied, the relevant
sounder fuse will trip. When the fault is removed, the fuse will automatically reset.
Power Supply Faults
Note: The power supply status can be viewed at Access Level 3, selecting the
Engineering menu, then selecting Show PSU Stats.
When a power supply fault occurs the LCD unit displays the specific fault and the Power
Supply Fault yellow LED flashes. A power supply fault arises when one, or more of the
following conditions have occurred:
The mains supply voltage is too low, or has failed completely
The mains supply fuse (F1) has ruptured
The battery fuse (F2) has ruptured
The battery supply voltage is too low
The Power Supply PCB is faulty.
The following lists typical fault diagnosis for power supply faults:
The mains supp ly v ol ta ge is too low , o r has fai led c om ple te ly
Sy m p tom s : The EP203 panel is running on batteries, but NOT on mains supply.
The LCD unit displays ‘Mains=FAIL and the Hazardous Voltages Present red LED on the
Power Supply PCB is lit steady.
www.acornfiresecurity.com
www.acornfiresecurity.com

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C-TEC EP203 Specifications

General IconGeneral
BrandC-TEC
ModelEP203
CategoryFire Alarms
LanguageEnglish

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