OHAUS Guardian 3000, Instruction Manual

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Guardian
TM
Hotplate-Stirrers EN-35
5.3 Troubleshooting
The following table lists common problems and possible causes and remedies. If
the problem persists, contact OHAUS or your authorized dealer.
Table 6-1 Troubleshooting
Error* Cause of Error How to Fix
Unit fails to
power on
Missing or blown fuse Add or replace fuse as necessary.
E1 Plate RTD open
Not fixable by user, please contact
Ohaus.
E2 Plate RTD short
Not fixable by user, please contact
Ohaus.
E3
No stirring motion / cannot
reach speed Not fixable by user, please contact
Ohaus.
E4
Probe RTD open (Removing
the probe while the unit is
heating)
Switch unit to standby, then return
to normal operating mode.
E5
Probe RTD short
(Malfunctioning probe)
Switch unit to standby, remove the
probe from the unit, then return to
normal operating mode.
E6 A/D lock error
Not fixable by user, please contact
Ohaus.
E7
User Probe Error (Plugging
the probe into the unit while
it is heating)
Switch unit to standby, then return
to normal operating mode.
E8 Plate over temperature
Not fixable by user, please contact
Ohaus.
E9 Plate under temperature
Not fixable by user, please contact
Ohaus.
E10 Triac fault
Not fixable by user, please contact
Ohaus.
E11 Heater damage
Not fixable by user, please contact
Ohaus.
E12 Heater overheating
Switch unit to standby, then return
to normal operating mode.
*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.