Despatch RAD1-42 -2E with Protocol 3 - Manual (Page 28)

T ROUBLESHOOTING RAD1-42-2E Oven Owner ’s Manual
28 Version 1
Copyright © 2012 by Despatch Industries.
All rights reserved. No part of the contents of this manual may be reproduced, copied or transmitted in any form or by any
means including graphic, electronic, or mechanical methods or photocopying, recording, or information storage and
retrieval systems without the written permission of Despatch Industries, unless for purchaser's personal use.
Figure 5. RAD1-42-2E LED Circuit Board Lights.
Table 3. Troubleshooting with Control Panel Mounted Circuit Board.
If LED is… Check …
1 LED 2LED 3 LED
Not Lit Check Fuse Block 2F and 3F (Figure 5)
Lit Not lit Lit

Check High Limit

Check optional door switch, if appropriate
Lit Lit Lit 
Check Fuse Block 1F and 4F (Figure 5)

Check SSR

Check heater

Check heater relays
Danger!
Table 3 lists troubleshooting steps that must be performed by a
qualified electrician or electrical technician trained on electrical
safety and the use of personal protective equipment.
Danger!
Electrical panels contain high voltage. Turning the power switch off
on the oven does not de-energize the circuit board. Disconnect and
lock out the power supply before working on the circuit board.
Failure to lock out the power supply can result in death or injury.
Indicator LED’s
Neutral Terminal 2
4L1, 1H2 & 1H1 Connections
2 & 3F Fuse blocks
1F& 4F Fuse blocks
Power Terminal Block Purge Timer socket
1LED
2LED
3LED