BioSmart BIO-1400 OWA Owner's Manual - page 17
Page 15
©2014 BioSmart Technologies
Calibrating the Internal Thermometer
The internal thermometer in the heater can be re-calibrated to match the room
thermometer if it is not sufficiently accurate the way the heater arrived from the
factory. This procedure can be completed directly with the PCB controls on the
front panel:
1. Turn the heater on.
2. Determine base-line room temperature in the heater by pressing “up” and
“down” at the same time. The room temperature detected by the heater
thermostat will be displayed on the screen for 15 seconds. This may or
may not correspond with the wall thermostat setting. This is what you are
about to change.
3. Release the buttons and wait for 15 seconds for the unit to return to its
regular functions.
4. To continue with the recalibration, press “up” and “enter” at the same
time and hold until the following appears in the window: “8.8.8.8.8”
5. Press “enter” again. Ignore the existing number which is -9 to +9. This
number is the arbitrary adjustment between the thermostat sensor and the
temperature that was displayed on the screen when you pushed the “up
and “down” buttons at the same time in Step 1.
6. To adjust the temperature that was displayed on the screen in Step 1,
press the “up” or “down” buttons to obtain a higher or lower base-line
temperature for the internal thermostat on the heater.
7. Once the desired temperature is displayed on the screen, press the “enter”
button again to exit the programming mode. The temperature setting
displayed on the heater screen will now be measured against the new
thermostat setting you have programmed into the heater.
This entire procedure can be followed skipping step 1 and using the temperature
setting on any wall thermostat instead of the temperature setting on the internal
thermometer in the heater. Remember, the internal temperature measurement on
the thermostat is only your starting reference point and it is strictly arbitrary. It is
set at the factory and is usually within 2 degrees of reality.
By following this procedure, you are setting the unit to precisely match the wall
thermostat rather than the factory installed thermostat setting. Either set-point is
fine depending upon the customer’s preference.