OHAUS Guardian 3000 Hotplate-Stirrer Manuel D'instructions page 37

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TM
Guardian Hotplate-Stirrers
5.3 Troubleshooting
The following table lists common problems and possible causes and remedies. If
the problem persists, contact OHAUS or your authorized dealer.
Error* Cause of Error
Unit fails to
Missing or blown fuse
power on
E1 Plate RTD open
E2 Plate RTD short
No stirring motion / cannot
E3
reach speed
Probe RTD open (Removing
E4 the probe while the unit is
heating)
Probe RTD short
E5
(Malfunctioning probe)
E6 A/D lock error
User Probe Error (Plugging
E7 the probe into the unit while
it is heating)
E8 Plate over temperature
E9 Plate under temperature
E10 Triac fault
E11 Heater damage
E12 Heater overheating
*Note: Error code instances will stop equipment operation by default.
5.4 Service Information
If the troubleshooting section does not resolve your problem, contact an authorized
OHAUS Service Agent. For Service assistance in the United States, call toll-free 1-
800-526-0659 between 8:00 AM and 5:00 PM Eastern Standard Time. An OHAUS
Product Service Specialist will be available to assist you. Outside the USA, please
visit our website www.ohaus.com to locate the OHAUS office nearest you.
Table 6-1 Troubleshooting
How to Fix
Add or replace fuse as necessary.
Not fixable by user, please contact
Ohaus.
Not fixable by user, please contact
Ohaus.
Not fixable by user, please contact
Ohaus.
Switch unit to standby, then return
to normal operating mode.
Switch unit to standby, remove the
probe from the unit, then return to
normal operating mode.
Not fixable by user, please contact
Ohaus.
Switch unit to standby, then return
to normal operating mode.
Not fixable by user, please contact
Ohaus.
Not fixable by user, please contact
Ohaus.
Not fixable by user, please contact
Ohaus.
Not fixable by user, please contact
Ohaus.
Switch unit to standby, then return
to normal operating mode.
EN-35