Filter
Top Products
Temperature Control Diagnostic Codes
8 312066Z
Temperature Control Diagnostic Codes
Temperature control diagnostic codes appear on tem-
perature display.
These alarms turn off heat. E99 clears automatically
when communication is regained. Codes E03 through
E06 can be cleared by pressing . For other codes,
turn main power OFF then ON to
clear.
E01: High fluid temperature
Causes of E01 Errors
• Thermocouple A or B (310) senses a fluid tempera-
ture above 230°F (110°C).
• Fluid temperature sensor (FTS) senses a fluid tem-
perature above 230°F (110°C).
• Overtemperature switch A or B (308) senses a fluid
temperature above 230°F (110°C) and opens. At
190°F (87°C) the switch closes again.
• Thermocouple A or B (310) fails, is damaged, is not
touching the heater element (307), or has a poor
connection to the temperature control board.
• Overtemperature switch A or B (308) fails in the
open position.
• 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
• On 6.0 and 10.2 kW heater models only: Jumper
wire on J1 connector, between module (3) and dis-
play (4), is loose or incorrectly wired.
Checks
Check which zone is displaying the E01 error.
1. Check that connector B is firmly plugged into tem-
perature control board (see F
IG
. 5, page 37).
2. Clean and re-plug connections.
3. Check connections between the temperature con-
trol board and overtemperature switches A and B
(308), and between temperature control board and
thermocouples A and B (310) or FTS (21) [depend-
ing on which zone is displaying E01]. See Table 5,
page 37. Ensure that all wires are securely con-
nected to connector B.
Code Code Name Alarm
Zone
Corrective
Action page
01 High fluid temperature Individual
8
02 High zone current Individual
9
03 No zone current with
hose heater on
Individual
10
04 FTS not connected Individual
10
05 Board overtemperature Individual
10
06 Communication cable
unplugged from module
Individual
10
99 Loss of communication ALL
16
For hose zone only, if FTS is disconnected at
startup, display will show hose current 0A.
Troubleshooting this equipment requires access to
parts that may cause electric shock or other serious
injury if work is not performed properly. Have a quali-
fied electrician perform all electrical troubleshooting.
Be sure to shut off all power to the equipment before
repairing.