Dyer Environmental Controls Ltd
L
A
Z
N-
A
E
B
RM
K
-
T
RT
Z
A
S
RT 45
Breakglass
2
8
3
1
6
4
7
10kΩ
3
2
LT
MOT
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
Terminal resistor end of line module
(from MOT E, A & B in panel).
Connection point
(local to vent - by
others)
Terminate all
other coloured
cables in
connection
point.
Breakglass display indications
+ +
Solid green
- System healthy, no faults.
+ +
Solid green, flashing yellow
- System healthy, no fault.
Inbuilt service timer expired. Contact Dyer’s service &
maintenance department.
+ +
Flashing yellow
- System fault. See panel display
indications below.
+ +
Solid red
- System in fire.
Line
Group
D79
D47
D42
D20
D14
Panel display indications
D47
Line
• Indicates an issue between the control panel and
control elements (fire alarm interface, smoke detector
or breakglass, line button in ‘off’ position).
•
Each control element requires a single 10kΩ 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” & “-”.
• Check external signal fuse has not blown.
• Ensure line button at top of panel is in ‘on’ position at
all times.
D42
Alarm
•
System in fire.
D20
Control
• System healthy, no faults.
D79
Group
• Issue between the control panel and the drive(s).
Ensure EM 47 K drive group end of line is connected as
indicated above.
• Check 1.6 Amp (4402) / 3.15 Amp (4404) fuse has not
blown.
D14
Battery
• Incorrect connection of the batteries or 3.15 Amp fuse
blown.
Alarm open
Reset close
RZN 4402/04-K V2 Troubleshooting Guide
Dyer Environmental Controls Ltd, Unit 10, Lawnhurst Trading Estate, Cheadle Heath, Stockport, Cheshire SK3 0SD
Page 1 of 2
www.dyerenvironmental.co.uk +44 (0)161 491 4840 Registered in England 02670985 VAT No. 611329279
V1
