Honeywell FLASHGUARD 2000B User Manual

FlashGuard 2000B Medium Intensity Lighting System

Troubleshooting Guide

Table of Contents

Flashhead (Strobe) Troubleshooting Flowchart pg. 2
Multiple Strobe Troubleshooting Flowchart pg. 3
Flashhead Problems pg. 4
Multiple Strobe Problems pg. 7
Flashhead Isolation Test pg. 9
Power Supply Isolation Test pg. 10
Status Indicators pg. 11
Tools Required pg. 11
Recommended Spare Parts pg. 12

FlashGuard 2000B Troubleshooting Guide

No

OFF?

OFF?

No

No

Yes

Day strobe out?

Yes

Yes

slow?

Yes

Yes

No

Flashhead (Strobe) Problems

START
Flashhead
works in at

least one

mode?

Yes

Day mode

strobe is

OK, Night

strobe out?

Night mode

strobe is OK,

Are all of

the LEDs

Yes

Section 1, pg. 4

Section 4, pg. 5

Section 5, pg. 5

Control

Power ON,

High Voltage

Yes

Section 2, pg.

Control

Power and

High Voltage

Both ON ?

Yes

Section 3, pg. 5

No

Strobe won’t

switch from day

to night mode?

No

Strobe flashing

too fast or too

No

Night mode

strobe too

bright?

Section 6, pg. 6

Section 7, pg. 7

Section 8, pg. 8

Page 2

FlashGuard 2000B Troubleshooting Guide

No

Yes

than 40 FPM?

Yes

Yes

START

No

Multiple Strobe Problems

Only one strobe

is acting

unusual?

Yes

Go to “Strobe problems”

.

flowchart, preceding

page

Strobes are

flashing out of

No

Strobes have a

‘double flash’ or

are flashing faster

Master switches to

night, but slaves

stay in day mode?

Section 9, pg. 8

Section 10, pg. 8

Section 11, pg. 8

Page 3

FlashGuard 2000B Troubleshooting Guide

FLASHHEAD (STROBE) PROBLEMS

Section 1 Flashhead does not operate in any mode, no LED’s on.

Possible Cause: Input power incorrect.
Diagnostic Test: Measure input power – it should be 120 VAC ±10%.
Corrective Action: Supply correct input power.

Possible Cause: Power supply interlock switch not engaged.
Diagnostic Test: Press the power supply interlock switch and hold it down.
Corrective Action: Close the unit – the system should operate properly.

Possible Cause: Blown F1 (4 Amp) fuse, or transformer (630mA) fuse.
Diagnostic Test: Remove all three circuit boards and check for damage. Remove the

photocell wiring from TB1-1 and TB1-2. Perform “Flashhead Isolation Test”
(pg. 9) and check for improper resistances. Leave the flashhead cable
disconnected, replace the fuse and apply power. Reconnect the strobe
cable, the photocell wiring, and the circuit boards one by one to determine
which one will blow the fuse.

Corrective Action: Replace the defective component.

Section 2 Flashhead does not operate in any mode, control power indicator

on, high-voltage neon lamp off.

Possible Cause: Flashhead interlock switch not engaged.
Diagnostic Test: Remove the flashhead wires TB2-5 and TB2-6 (gray and white), and

measure resistance between them – it should be less than 5Ω.

Corrective Action: Re-seat the flashhead cover, making sure the interlock switch engages

when the cover is closed. If the system still does not have continuity
between TB2-5 and TB2-6, replace the flashhead interlock switch and/or
inspect the strobe cable for damage.

Possible Cause: Relay K1 not energizing.
Diagnostic Test: When the interlock switches are engaged, the K1 relay should energize. If

not, measure for 120 VAC across the relay coil. Alternatively, remove the
connectors and check resistance across the K1 coil – it should be 300Ω.

Corrective Action: Replace the K1 relay.
Possible Cause: Faulty high-voltage board.

Diagnostic Test: Visually check the traces on the high-voltage board. Check for any shorted

diodes. Use diode check function on multimeter if available.

Corrective Action: Replace the high-voltage board.

Page 4