Rinnai RUC80i Training Program page 70

Temperature Controller
Press and hold the DOWN arrow. After two seconds press the ON/OFF button at the same time. Then let go of both buttons. First "01" will be displayed
followed by a display of the flow rate in GPM. Pressing the UP arrow will change the display to "02" followed by the output water temperature and so on.
Code Reading
01 Water Flow in GPM.
02 WH Outlet Temperature.
03 Hours of Operation.
04 Combustion cycles.
05 Fan Frequency.
06 System Controllers.
07 Water Flow Servo Position.*
08 Inlet Water Temperature.
09 Fan Current.
10 Total Bath Fill Volume.
11 HEX Temperature.
12 Bypass Servo Position.
13 Burner Thermistor Temperature
14 Intake Air Temperature.
15 Thermal Fuse
16 Thermocouple Value
17 Freeze Protection Temperature 1.
18 Freeze Protection Temperature 2.
19 Pump Hours
20 Pump Cycles
© 2016 Rinnai America Corporation
PROPRIETARY and CONFIDENTIAL
(Maintenance Monitor Functions)
To enter the maintenance monitor display mode:
Units
0.1 GPM
Deg. F
X100
X100
Hertz
# of controllers Add together for total # controllers connected to unit.
*
Deg. F
10 mA
Gallons
Deg. F
Degrees
Deg. F
Deg. F
Deg. F
mV
Deg. F
Deg. F
X100
X100
Enhancing Lives By Changing The Way Water Is Heated
Description / Notes
GPM Through WH (decimal not shown).
Output Water Temperature.
Total Combustion Hours.
Total Combustion Cycles.
Fan Motor Hertz (if operating).
*See notes.
Calculated Inlet Water Temperature.
Fan Current Draw (if operating).
Volume of Water During Bath Fill Mode.
Heat exchanger output water temp
Degrees of opening (if equipped)
(if equipped)
(indoor non-condensing models only)
(condensing models only)
Temperature reading of freeze protection sensors.
Total pump operation hours (RUR98 models only)
Total pump operation times (RUR98 models only)
70
:
Note: Not all
diagnostic functions
will be available on all
models. If a water
heater does not have
a particular function
that number will be
skipped when
scrolling through the
menu.
*Water flow servo position.
• If the controller reads 1,
the servo is open.
• If the controller reads 2,
the servo is closed.
• If the controller reads 0,
the servo is partially
open.
5/4/2018