Etc Settings & Specs - Heatmaster MF-3000 Owner's Manual

MF Series
Electronic Temperature Control Settings & Specifications
Description
The Ranco electronic temperature control (ETC) is de-
signed to provide on/off control for heating and cooling. It
is equipped with a liquid crystal display (LCD) that pro-
vides a constant readout of the sensed temperature, and
a touch keypad that allows the user to easily and accu-
rately select the set point temperature, differential and
heating/cooling mode of operation.
Programming steps and Display
The ETC can be programmed in four simple steps using
the LCD display and three keys on the face of the control.
STEP 1 To start programming press the SET key once to
access the Fahrenheit/Celsius mode. The Display
will show the current status, either F for degrees
Fahrenheit or C for degrees Celsius. Then press
either the up or down
tween the F or C designation.
Step 2 Press the SET key again to access the set point.
The LCD will display the current setpoint and the
S1 indicator will be blinking on and off to indicate
that the control is in the set point mode. Then
press either the up
key to decrease the setpoint to the desired tem-
perature.
Step 3 Press the SET key again to access the differen-
tial. The LCD will display the current differential
and the DIF1 indicator will be blinking on and off
to indicate that the control is in the differential
mode. Then press the up key to increase or the
down key to decrease the differential to the de-
sired setting.
Step 4 Press the SET key again to access the cooling or
heating mode. The LCD will display the current
mode, either C1 for cooling or H1 for heating.
Then press either the up or down
between the C1 or H1 designation. (This setting
must remain at H1 for proper furnace opera-
tion and temperature regulation.) Press the
SET key once more and programming is com-
plete.
NOTE: The ETC will automatically end programming if no
keys are pressed for thirty seconds. Any settings that
have been changed on the control will be stored at that
point.
- 16 -
arrow key to toggle be-
key to increase or the down
key to toggle
HeatMaster SS Outdoor Furnaces
Step Indicator
1 F or C Fahrenheit or Celsius Scale
2 S1 blinking Setpoint Temperature
3 DIF1 blinking Differential Temperature
4 C1/H1 Cooling or Heating Mode
TROUBLESHOOTING ERROR MESSAGES
Display Message
E1 - Appears when either the up or down key is
pressed when not in the programming mode.
To correct: If the E1 message appears even when no
keys are being pressed replace the control.
E2 - Appears if the control settings are not properly stored
in memory.
To correct: Re-set all settings. If the display continues
to show E2, replace the control.
EP - Appears when the probe is open, shorted, or sensing
a temperature that is out of range
To correct: Check to see if the sensed temperature is
out of range. If not, check for probe damage by com
paring it to a known ambient temperature between
–30°F and 220°F. Replace the control if necessary.
EE - Appears if the EEPROM data has been corrupted.
To correct: This condition can not be field repaired.
Replace the control.
CL - Appears if calibration mode has been entered.
To correct: Remove power to the control for at least
five seconds. Reapply power. If the CL message still
appears, replace the control
SPECIFICATIONS
Input Voltage 120 or 208/240 VAC (24 VAC
optional), 50/60 Hz
Temperature Range -30°F to 220°F
Differential Range 1°F to 30°
Sensor Thermistor, 1.94 in. Long
x .025in. Dia. with 8 ft. cable
Power Consumption 120/208/240 VAC: 100 Milliamps
www.heatmasterss.com
Description
24 VAC: 2-6 VA