Bradford White RE2H50R10 - Manuel

Temperature Sensors
Sensor Description Normal tem-
perature Range
Resistance
range in ohms
Resistance at
77º F
T2 Tank 30º F-160º F 34K-1.75K 10K
T3a Evaporator
Inlet
15º F-130º F 57K-3K 10K
T3b Evaporator
Outlet
15º F-130º F 57K-3K 10K
T4 Compressor
Outlet
30º F-250º F 188K-3K 55K
T5 Ambient 15º F-130º F 57K-3K 10K
Bradford White Heat Pump Water Heater RE2H50R10-1NCWW
IMPORTANT SAFETY NOTICE
For your family’s comfort, safety and convenience, it
is recommended this water heater be installed and
serviced by a plumbing professional. Any attempt to
repair a major appliance may result in personal injury and
property damage. The manufacturer or seller cannot be
responsible for the interpretation of this information, nor
can it assume any liability in connection with its use. This
quick reference guide is provided for information purposes
only and does not replace, modify or change in any
manner the Owner’s Manual and Installation Instructions.
DISCONNECT POWER BEFORE SERVICING
IMPORTANT- RECONNECT ALL GROUNDING DEVICES
All parts of this appliance capable of conducting electrical
current are grounded. If grounding wires, screws, straps,
clips, nuts or washers used to complete a path to ground
are removed for service, they must be returned to their
original condition and properly fastened.
SPECIFICATIONS
Capacity .......................................................................50 US gal
Tank Max Working Pressure .................................. 150 PSI
Water Temperature Set Point Range .....100F - 140F
Electrical ...................................... 240/208VAC 60 Hz 1-PH
Circuit Breaker ..............................................................30 Amp
Upper Element Wattage ...................................4500/3380
Lower Element Wattage ...................................4500/3380
REFRIGERATION SYSTEM
Compressor ...................................................................... 600 W
Refrigerant Charge (R134a) .................................. 27.34 oz
Compressor LRA ............................................................ 21.0A
Compressor LRA with Capacitor ............................19.6A
Compressor RLA ...............................................................3.0A
Compressor RLA with Capacitor ...............................4.5A
High Pressure (at 70 ambient) ............................ 331 PSIA
Low Pressure (at 70 ambient) ............................. 107 PSIA
SERVICE MODE
The Service Mode can be accessed by pressing and holding the
UP Arrow and Enter buttons simultaneously for 5 seconds. You
will first hear a single beep when pressing the buttons, then a
two-tone sound indicating the action was successful. A moment
later, you will see the first display of the thermistor T2 alternating
with its temperature displayed in the units selected (degrees F
or C). The Service Mode will time out after 15 minutes of button
inactivity.
Three functions are available in Service Mode: View Thermistors,
Heating Component Status and Control, and View Faults and
Counters. You may switch from one function to another by
pressing the Mode button. Service Mode starts with the View
Thermistors function with the Heat Pump (Only) Mode LED (top) lit.
Pressing the Mode button will switch to the Heating Components
Status and Control function with the Hybrid LED (2nd from top) lit.
Pressing the Mode button again will switch to the View faults and
Counters function will be 3rd LED from the top lit. Pressing the
Mode button again will return to the top LED and the Thermistors
function.
An explanation of the three functions follows:
View Thermistor - Each of the 5 thermistors can be monitored for
the temperature they sense. The thermistor designation appears
on the display and alternates with the temperature in degrees
of the units selected - Fahrenheit or Celsius. Pressing the Down
Arrow button switches the display to the next thermistor in the list.
The following table shows the thermistors’ designations and their
function in the unit.
Designation Function
T2 Tank (Water) Temperature
T3a Evaporator Inlet Temperature
T3b Evaporator Outlet Temperature
T4 Compressor Discharge Temperature
T5 Ambient Air Temperature
Heating Component Status and Control - This function displays
the status (on/off) for each of the heating components - Lower
Element, Upper Element and Compressor - and allows you to turn
it on or off. The first component is the Lower electric element (LE).
On status is signified by a 1 and off is 0. Pressing the Down Arrow
button switches to the Upper Element (UE). Pressing Down Arrow
once more switches to the Compressor (Co). only one component
can be on at one time. The electric elements will only stay on for
5 minutes without refreshing by pressing any button on the front
panel. The compressor timeout is 10 minutes.
View Faults and Counters - The control counts the number of
times a fault is recorded. A fault is not displayed until 10 counts
have been recorded (or 5 counts for Dirty Filter) to ensure a true
failure has occurred. For example, if the upper element were to
fail, each time the control energized the upper element, but the
element failed to draw current, the count would increase by 1.
If however, the element responded normally, the count would
decrease by 1 down to 0, but not less than zero. This function
starts by displaying any fault codes (counters that have reached
10) in the system. Pressing Down Arrow takes you to the next
fault code, if any. If no fault codes are active, “- - -” is displayed.
Pressing the Filter button switches the display to the fault counters.
The fault counter designation alternates in the display with its
count value. For example, if the thermistor T3a has registered
3 more failures than passes, its value will be 3 and the display
will alternate between “F5” and “3”. The fault codes and their
explanations are listed in the fault code table shown on page 2.
To clear all fault codes and fault counters, press and hold the Enter
button for 5 seconds and listen for the Hold Tones.
Exiting Service Mode - To exit Service Mode without waiting for
15 minute timeout, press and hold the Up Arrow and Down Arrow
simultaneously for 5 seconds and listen for two beeps.
Heat Pump
(Only)
Utilizes heat pump only.
Hybrid
Utilizes the heat pump and
electric heating elements.
Electric/Standard
(Fan Off)
Utilizes electric elements
only. Stops the fan, the
heat pump and the flow of
cool air.
Vacation
Use this mode for periods
away from home.
Mode
Press this button to toggle
through the various heating
modes. Press and hold to
switch between ºF and ºC.
Display
Displays the current
temperature or the number
of days for vacation mode.
Arrow Pad
Use the up and down
arrows to manually change
the water temperature, or to
select days for Vacation Mode.
Enter
Press to confirm selections.
Filter
The red LED indicates that
the filter needs cleaning.
Press and hold to reset.
T2 Tank Sensor
T3b Evaporator
Outlet Sensor
T4 Compressor
Outlet Sensor
T3a Evaporator
Inlet Sensor
T5 Ambient Air
Sensor
238-50804-00A 31-75034 03-14
PASS/FAIL COMPONENT OPERATION
Selected Mode SS LE UE Temporary Mode (if component failure is detected)
Any P P P Runs in selected mode
Any F P P Electric mode
Hybrid P F P Hybrid Mode (but uses SS when LE is called for)
Electric P F P Electric Mode (UE only)
Heat Pump (Only) P F P Heat Pump (Only) mode
High Demand/Boost P F P High Demand/Boost (but uses SS when LE is called for)
Hybrid P P F Control uses SS and LE based on demand algorithm
Electric P P F LE Only Mode
Heat Pump (Only) P P F Heat Pump (Only) Mode
High Demand/Boost P P F High Demand/Boost (but uses LE when UE called for)
Any F F P Electic Mode (UE only)
Any P F F Heat Pump (Only) Mode
Any F P F LE Only Mode
Any F F F Electric Mode, displays 3 fault codes
SS = Sealed System
LE = Lower Element
UE= Upper Element
Double wall heat exchanger, suitable for potable water
connection.
CAUTION