Troubleshooting Chore-Tronics® 2 Control
92
MT1843B
Programming Trouble Shooting
Troubleshooting
Problem Possible Cause Possible Solution
Can not lower set temperature
below 32.0° F. and can not raise
the set temperature above
120.0° F.
Normal set temperature range. The Control has been set up so
that set temperature range is
between 40.0° F. and 120.0° F.
Have one Fan set to come on at
80°F and another Fan to come on
at 80.3°F, but the Control won’t
accept the 80.3° setting.
Offsets too close.
There must be at a .5°F difference
between any two Fan outputs.
Two or more Fans may be set to
come on at the same temperature.
Heater outputs follow the same
rules, however the cool out puts
do not.
Fan(s) turns on, Mode Sensor(s)
temperature is at set point.
A.) Fan is assigned to a Timer.
B.) Temperature Sensor(s)
assigned to operate the Fan
are different than the mode
Sensor(s).
C.) Fan’s manual switch is set to
the manual “on” position.
D.) Bad Relay Module/MS Board.
A.) If Timer is not wanted on Fan
remove the Timer in
the "Outputs and Tempera-
tures" screen.
B.) Change Temperature Sen-
sor(s) assignments in the
Setup-General: Outputs
Screen if desired.
C.) Put manual switch in “auto-
matic” position.
D.) Replace Module/Board
Fan(s) will not turn on when mode
Sensor(s) reach the Fan’s on tem-
perature.
A.) Fan’s assigned Sensor(s) are
different than the mode Sen-
sor(s)
B.) Fan is set to run in a different
mode (example: Tunnel
instead of Power).
C.) Fan’s manual switch is set to
the “off” position.
D.) Bad Relay Module/MS Board.
A.) Change Temperature Sen-
sor(s) assignments if desired.
B.) Go to the "Setup" screen and
change modes of operation if
desired.
C.) Put manual switch in “auto-
matic” position.
D.) Replace Module/Board
Fan(s) will not shut off. A) Fan has not reached the “off”
temperature.
B.)Fan assigned Temperature Sen-
sor(s) is different than mode
Temperature Sensor(s).
C.) Fan’s manual switch is set to
the manual “on” position.
D.) Bad Relay Module.
E.) Back-up thermostat is overrid-
ing the Control.
A.) The Fan’s “off” temperature is
the “on” temperature of the
next Fan below it, or if
desired you can program the
"off" temperature.
B.) Change Temperature Sen-
sor(s) assignments in the
Setup-General: Outputs
screen if desired.
C.) Put manual switch in “auto-
matic” position.
D.) Replace Module/Board.
E.)Check setting of back-up ther-
mostat and correct if neces-
sary.
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