White Rodgers 47D43-811 User Manual
Operator: Save these instructions for future use!
FAILURE TO READ AND FOLLOW ALL INSTRUCTIONS CAREFULLY BEFORE
INSTALLING OR OPERATING THIS CONTROL COULD CAUSE PERSONAL
INJURY AND/OR PROPERTY DAMAGE.
DESCRIPTION
The 47D43-811 is a microprocessor-based demand defrost
controller intended for Rheem heat pump systems. This
controller uses basic differential temperature means to detect
degradation of system performance due to ice build-up on the
outdoor coil. The controller uses “self-calibrating” principles
to calibrate itself to the heat pump system. The defrosting is
performed by reversing the direction of flow of refrigerant.
The 47D43-811 is meant to replace the following controllers
in Rheem heat pump systems:
47D43-811 Replaces
47D43-111
47D43-111
47D43-111 02
47D43-101
47-102685-04
47-102685-84
47-102685-05
47-102685-02
47-21517-22
47-21517-92
47-102684-02
47-102684-04
47-102684-07
47-102684-08
DDL-122131-2RH
DDL-122131-2RH
47D43-811
Deluxe Defrost Control
INSTALLATION INSTRUCTIONS
47D43-811
PRECAUTIONS
CAUTION
!
• This control is intended only for Rheem heat pump
systems.
• Replace 47D43-811 control as a unit - no user
serviceable parts.
If in doubt about whether your wiring is millivolt, line or low
voltage, have it inspected by a qualified heating and air
conditioning contractor or licensed electrician.
Do not exceed the specification ratings.
All wiring must conform to local and national electrical codes
and ordinances.
This control is a precision instrument, and should be handled
carefully. Rough handling or distorting components could
cause the control to malfunction.
CONTENTS
Description ................................................................ 1
Precautions ............................................................... 1
Specifications ............................................................ 2
Operation ................................................................... 2
Installation ................................................................. 3
WARNING
!
• To prevent electrical shock and/or equipment damage,
disconnect electric power to system at main fuse or
circuit breaker box until installation is complete.
• This control is not intended for use in locations where
it may come in direct contact with water. Suitable
protections must be provided to shield the control from
exposure to water (dripping, spraying, rain, etc.)
• Label all wires prior to disconnection when servicing
controls. Wiring errors can cause improper or loss of
heat pump operation and/or shock hazard.
• Following installation or replacement, follow appliance
manufacturer’s recommended installation/service
instructions to insure proper operation.
• Do not use on circuits exceeding specied voltage.
Higher voltage will damage control and could cause
shock or re hazard.
www.white-rodgers.com
www.emersonclimate.com
PART NO. 37-7199A
1047
SPECIFICATIONS
Electrical Ratings [@ 77oF (25oC)]:
Rated Voltage ........................ 24 VAC
Rated Voltage Range .................. 18-30 VAC
Max. Power Consumption @ 24 VAC ..... 4.08 VA
Nominal Frequency.................... 50/60 Hz
Relay Load Ratings:
Compressor Contactor Relay ...... 0 VA in rush, 6 VA holding
Fan Relay ...................... 1/2 HP @ 240, 1/4 HP
@ 120 VAC
Reversing Valve Relay (RV) ........ 24 VA
Auxiliary Heat Relay (D)........... 1 Amp. 0.6 P.F.
Operating Temperature Range ........... -40o to 150o F (-40o to 65o C)
Humidity Range ...................... 5% to 95% relative humidity
(non-condensing)
High Pressure Cutout Switch (HPC)....... 18 VAC
Low Pressure Cutout Switch (LPC) ....... 18 VAC
OPERATION
Each controller has 24 VAC input and B, Y, and D terminals
for connection to a standard thermostat. The controller has
pins for connection of two temperature sensors to measure
ambient and coil temperature, as well as connections for
high- and low-pressure switch monitoring. Controlled outputs
are outdoor fan, reversing valve, and compressor contactor.
The 47D43 provides two LEDs for status and fault indication.
Option Switch
Switch labeled SW1 is used to select the defrost mode
termination temperature of outdoor coil. Defrost mode is
terminated when the coil temperature exceeds the selected
termination temperature. Temperature options for SW1 switch
settings are:
B A
On Off 50o F
B A
Off On 60o F
B A
On On 70o F (default)
B A
Off Off 80o F
B A
Test Pins
The pins labeled TEST can be used to change operation
mode in the field. Momentarily short the test pins to force the
system into the defrost mode. Momentarily short the test pins
again to terminate the defrost mode. To avoid unnecessary
system mode transition, do not use the test pins frequently.
Diagnostic Features
The control continuously monitors system operation. If a fault
occurs, the two LEDs on the control will indicate a diagnostic
code, if more than one fault occurs, only the code with the
higher priority will be shown.
The table shows the diagnostic codes.
LED #1 LED #2
Off Off No power 0
On On Coil sensor failure 4
Off On
Flash* Flash* Normal 1
Off Flash*
Flash* Off
On Flash*
Flash* On
On Off Defrost mode 1
Alternating Flash 5-minute delay 2
Timing Specications @ 60Hz*
Nom Units
Defrost Lockout Time 34 Mins.
Maximum Defrost Time 14 Mins.
Transient Delay (Normal) 2 Mins.
Back to Back Transient
Delay 4 Mins.
Maximum Frosting Time 6 Hrs.
Short Cycle Lockout Time 5 Mins.
Noise Abatement Time
(Normal 30 Sec.
Noise Abatement Time
(Forced Defrost) 5 Sec.
*50Hz Timings are 20% longer.
Fault
Indication
Ambient sensor
failure 3
Low pressure
lockout 7
High pressure
lockout 8
Low pressure
switch open 5
High pressure
switch open 6
Display
Priority
* The flash time is to be 0.5 seconds on and 0.5 seconds off
followed by 2 seconds off.
2
Loading...