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Note: Due to the highly advanced control on this appliance, which compensates for varying inlet water
temperature, the actual differential temperature may vary slightly from your setting. Press {S3} again to
display the factory default temperature measurement in Fahrenheit. Change the default to Celsius by
pressing {S1}. When finished, press {S3} one final time to place unit back into operation. The control
automatically re-starts if no key is pressed for 2 minutes.
C. STATUS MENU
Installers are also able to check the current status of the heater parameters by pressing {S4} for 3
seconds. Once activated, the display will show |d1| alternating value of the actual upper supply tank
temperature. Actual values are displayed for each function. To view the next value, simply press {S/4} to
go to the next displayed value. Listed below are the values which can be displayed. These values cannot
be changed. To exit this menu, press {S3} to resume normal operation.
Function Value
|d1| — Actual temperature from upper tank sensor
|d2| — Actual temperature from lower sensor
|d3| — |0| (Not used)
|d4| — |308| (Not used)
|d5| — Outdoor sensor
|d6| — Actual fan speed multiplied by 10 (Example: If fan speed displayed is |410| RPM x 10 = 4100
actual fan speed)
|d7| — Actual ionization current read from flame rectification probe
|d8| — |0| (Not used)
|d9| — |1| (Not used)
|d10| — Actual status of bus communication |co| = connected, |nc| = not connected
|d11| — |32| (Not used)
|d12| — Power on hours in thousands (display will not read until 100 hrs.)
|d13| — Total water heating hours in thousands (display will not read until 100 hrs.)
|d14| — |0| (Not used)
|d15| — Passed ignition attempts in thousands
D. OUTDOOR RESET
This unit is supplied with outdoor reset wire connection terminals. When an outdoor sensor (p/n 7250P-
319) is connected, operation of the unit immediately changes. Refer to the following steps to properly
set up the unit with an outdoor sensor.
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