D+H UK
D+H UK (DH Mechatronic UK Ltd), Unit 10, Lawnhurst Trading Estate, Cheadle Heath, Stockport, Cheshire SK3 0SD Page 1 of 2
www.dh-partner.co.uk
|
+44 (0)161 491 4840
|
Registered in England 02670985
|
VAT No. 611329279
V3
RZN 4503-T Troubleshooting Guide
L
A
Z
N-
E
b
RM
K
-
T
RT
Z
A
S
RT 45
Breakglass
2
8
3
1
6
4
7
10kΩ
3
2
LT
SD-O 371
Smoke detector
LT 84-U
Wall Switch
10kΩ
5
COM
10kΩ
1k
Ω
Fire alarm
interface
Normally
open, volt
free contact.
-
R
OR
10k
Ω
resistor -
orange
band
(from RM “R” & “-” in panel).
1k
Ω
resistor -
red
band (from
keyring bag).
10k
Ω
resistor -
orange
band
(from RT “T” & “-” in panel).
EM 47 K
Orange
Black
Black
Vent
24v D+H
Mechatronic
drive.
Orange
(High Speed)
White
Brown
End of line terminal resistor
(from MOT E, a & b in panel).
Connection point
(local to vent - by
others)
Display fault indications
Battery fault
:
• Incorrect connection of the battery.
Earth fault
:
• Issue with incoming power supply 230 v earth.
Detector Line fault
-
Solid
:
•
Indicates an issue between the control panel and control elements (fire alarm interface, smoke detector or
breakglass).
• Each control element requires a single 10
kΩ end of line resistor. See above detail.
•
If no fire alarm interface or smoke detector in system, leave 10kΩ
end of line resistor in RM terminals “R” & “-”.
If no RT 45 breakglass, leave 10k
Ω
resistor in RT terminals “T” & “-”.
Detector Line fault
-
Flashing:
• Indicates line deactivated, press the 1/0 Reset button at top of panel to reactivate.
Drive Group fault
:
• Issue between the control panel and the drive(s). Ensure EM 47 K end of line terminal resistor is connected as
shown above.
• Check 2.5 Amp fuse has not blown.
Terminate all
other coloured
cables in
connection
point.
a
MOT
RZN 4503-T / RT 45 breakglass display indications
+ +
Solid green
- System healthy, no faults.
+ +
Solid green + flashing yellow
- System healthy, no fault. Inbuilt
service timer expired. Contact our service department.
+ +
Flashing yellow
- System fault. See panel indications below.
+ +
Solid green + solid red
- System h in fire.
+ +
Flashing solid red
- System in fault + fire.
Alarm open
Reset close
