User's Manual

Troubleshooting
332144C 31
Heat Control Diagnostic Codes
Heat control diagnostic codes appear on the tempera-
ture display.
These alarms turn off heat. Codes E03 and E04 can be
cleared by pressing .
1. To clear other codes:
2. Shut off Heater Power.
3. Shut off Motor Power.
4. Turn on Motor Power and Heater power to clear.
E01: High Fluid Temperature
• Thermocouple ISO or RES (310) senses a fluid tem-
perature above 260°F (71°C).
• Overtemperature switch ISO or RES (308) senses a
fluid temperature above 230°F (110°C) and opens.
At 190°F (87°C) the switch closes again.
• Thermocouple ISO or RES (310) fails, is damaged,
is not touching the heater element (307), or has a
poor connection to the temperature control board.
• Overtemperature switch (308) fails in the open posi-
tion.
• The temperature control board fails to turn off any
heat zone.
• Zone power wires or thermocouples are switched
from one zone to another.
• Failed heater element where thermocouple is
installed.
• Loose wire
E01 Checks
NOTE: Before checking the thermocouple, note which
zone (ISO or RES) has high fluid temperature.
1. Check that connector B is firmly plugged into heater
control module. See Temperature Control Mod-
ules Connections, page 47.
2. Clean and re-plug connections.
3. Check connections between the temperature con-
trol module and overtemperature switch, and
between the temperature control module and ther-
mocouples. Ensure all wires are securely connected
to connector B on heater control module. See Table
7, page 32.
Code Code Name Alarm
Zone
Corrective
Action page
01 High fluid temperature Individual
31
02 High zone current Individual
32
03 No zone current Individual
32
04 Thermocouple not con-
nected
Individual
32
Troubleshooting this equipment requires access to
parts that may cause electric shock or other serious
injury if work is not performed properly. Have a
qualified electrician perform all electrical
troubleshooting. Be sure to shut off all power to the
equipment before repairing.