A3900 Series Controller manual
GENERAL
A3900 Series wireless sets is designed to control the room temperature in Industrial,
commercial and residential environment. It includes A3900 Series Wireless Thermostat
and A3900 Series Controller, by wireless data communication between thermostat and
controller, transfer
、
receive and carry out the control dictate and signal, and realize the
controlling of temperature.
Read This Before Installing controller
OPERATION
The A3900 Series Controller receive the signal from Wireless Thermostat without any
wires, and control cooling and heating equipment.
YOUR THERMOSTAT REPLACES
Description
Heat Pump (No Aux. or Emergency Heat)
Yes
Heat Pump (with Aux. or Emergency Heat)
Yes
Standard Heat & Cooling Systems
Yes
Two Stage Heat & Two Stage Cool
Yes
Standard Heat Only Systems
Yes
Millivolt Heat Only Systems– Floor or Wall
Furnaces
Yes
Standard Central Air Conditioning
Yes
Gas or Oil Heat
Yes
Electric Furnace
Yes
Hydronic (Hot Water) Zone Heat-2 Wires
Yes
Hydronic (Hot Water) Zone Heat–3 Wires
No
This Thermostat will NOT control 110/220Volt systems.
POWER SUPPLY
The
A3900 Series Controller shall be powered by 24 VAC.
MATCHING
The thermostat and controller will work only when they are match successful, and realize
1-1 control.
Step 1
(Controller): Power on the controller, press the match key for less than one
second (The key is on the right side of the controller, don’t press the key long). The
controller will receive the register matching data from the thermostat, user should finish
registration in 1 minute, if the controller haven’t received the matching dictate in 1 minute,
the controller matching data will come back to the data of last time automatically.
Step 2
(Thermostat): Press “MODE” key to “OFF” mode, then press “PROG” key for 3
seconds until the screen changes to menu setting. Press “PROG” key until LCD display
“CRES”, use up key to change the parameter to “01” and thermostat will match
automatically.
Matching is finished.
TESTING
Similar to menu setting.
Step 1 Press “PROG” key, until it displays “TEST”, change the parameter to “02” by
press up key , the relays will open one by one.
Step 2
Testing is finished, press “RUN” key to exit setting state, and the equipment could
work.
Note: This item is only for testing, not for normal output. if the wires be
connected .this test may be dangerous.
NOTE: The distance between the thermostat and controller should be long than
1m, if not it may fail communication. It should go back to the first step if the relay
don’t have output in the third step
.
On the condition that thermostat and Controller haven’t matched, Controller
output testing:
press the key (on the right side of the controller) and hold it over 3
seconds, relays will open and close one by one. Program will exit testing after thrice
circle. If user want to exit testing before three circle finished, press the key on the side for
3 seconds is OK.
Technical Data
Power AC24±5V
，
50/60Hz
Working environment
0
℃～
50
℃
Range 5
～
95%RH(non-condensing)
Shell
Fire retardant PC ABS
Dimension 116×98×45
mm
（
HxWxD
）
Connection interface
Each terminal capable of accepting 2 x 1.5 mm2
or 1 x2.5mm2 wires
，
electric heating type:1 x 4
mm2 wires
Wireless carrier wave frequency
433MHz
Current 28
mA
Communication baud rate
10 kbps
Wireless channels
1~10 channels
Communication distance
Beeline distance 30m in the field(The distance will
shorten if through walls and floors)
COMPRESSOR PROTECTION
The thermostat provides a 4 minutes delay after shutting of the heating or cooling
system before it can be restarted. This feature will prevent damage to your compressor
caused by rapid cycling. Note that this delay also applies to the heating system control. It
does not provide a delay when there are power outages. you can select the function on
or off at the configuration.
THERMOSTAT OUTPUT
Standard Terminal Outputs:
Refer to equipment manufacturers' instructions for specific system wiring information.
You can configure the controller for use with either multi-stage electric heat systems or
multi-stage gas systems. When configured for electric heat, the G terminal (blower/fan)
will be energized on a call for heat. This thermostat is designed to operate a
single-transformer system. If you have a two-transformer system, cut and tape off one
transformer. If transformer safety circuits are in only one of the systems, remove the
transformer of the system with NO safety circuits. If required, replace remaining
transformer with a 75VA Class II transformer. After disconnecting one transformer, the
two commons must be connected together. Use the terminal output information below to
help you wire the thermostat properly for your multi-stage system. After wiring see
CONFIGURATION section for proper thermostat configuration.
THERMOSTAT TERMINALS
SYSTEM Single-stage
Multi-stage
C* 24
Volt(Common)
R
24 Volt Emergency (hot)
E/W1
Heat mode 1st stage
W2
No output
Heat Mode 2nd stage
Y1
Cool Mode 1st stage
Y2
No output
2nd stage compressor
G
Blower/Fan Energized on call for Cool (and Heat if configured to
Electric Heat)
O No
output
B No
output
Heat Pump Terminal Outputs
Refer to equipment manufacturers' instructions for specific system wiring information.
You can configure the thermostat for use with the following heat pump system types:
Single stage compressor system; gas or electric backup. This thermostat is designed to
operate a single-transformer system. If you have a two-transformer system, cut and tape
off one transformer. If transformer safety circuits are in only one of the systems, remove
the transformer of the system with NO safety circuits. If required, replace remaining
transformer with a 75VA Class II transformer. After disconnecting one transformer, the
two commons must be connected together.
Use the terminal output information below to help you wire the thermostat properly for
your heat pump system. After wiring, see CONFIGURATION section for proper
thermostat configuration.
THERMOSTAT TERMINALS (HEAT PUMP)
SYSTEM
Heat Pump 1
Heat Pump 2
C* 24
Volt(Common)
R
24 Volt Emergency (hot)
E/W1
Emergency Mode 1st stage
W2
HP 1 and Emergency 2nd stage
Y1
Heat and Cool mode 1st stage (compressor)
Y2
No output
2nd stage compressor
G
Blower/Fan Energized on call for Heat and Cool
Set GAS/ELEC switch for Emergency mode
O
Energized in Cool Mode
B
Energized in Heat Emergency mode
WIRING
C
ool only system
Heat only system
1-stage cooling , heating system for normal mode
2-stage cooling , heating system for normal mode
1-stage cooling, heating system for heat pump
2-stage cooling, heating system for heat pump
INSTALLATION
Installation guide
What You Need
This thermostat includes two #8 slotted screws and two wall anchors for mounting. To
install your controller, you should have the following tools and materials.
■
Slotted Screwdriver(s)
■
Small Philips screwdriver
■
Hammer
■
Electric drill and 3/16” bit
CAUTION:
To prevent electrical shock and/or equipment dam- damage, age, disconnect
electric power to system at main fuse or circuit breaker box until installation is
complete.
WARNING
Do not use on circuits exceeding specified voltage. Higher voltage will damage
control and could cause shock or fire hazard. Do not short out terminals on gas
valve or primary control to test. Short or incorrect wiring will damage thermostat
and could cause personal injury and/or property damage.
TROUBLESHOOTING
Problem
Solution
SCRAMBLED OR
DOUBLE DISPLAY
(numbers over
numbers)
1.Remove clear mylar sticker.
NO DISPLAY
1.Charge Li-battery
ENTIRE DISPLAY
DIMS
1.Charge Li-battery
PROGRAM DOES
NOT CHANGE AT
YOUR DESIRE
SETTING
1.Check that the time is set properly to “AM” or “PM”
2.Check that the thermostat is not in “HOLD” mode.
3.Check for the correct day settings.
AUTO/FAN DOES
NOT TURN ON
1.Change HE/HG parameter to opposite setting .
2.The thermostat may be in the AUTO Mode. Look
for ”AUTO” on the LCD display. If the Heat and Cool
program temperature are close, then the thermostat
requires a larger room temperature change before
changing from Heat or Cool.
3. There may be as much as 4 minute delay before the
Heat or Cool system turns On-wait and check.
(Compressor protection delay).
4
，
Check your circuit breaks and switches to ensure there
is power to the system.
6. Make sure your furnace blower door is closed properly.
ERRATIC DISPLAY 1.Replace unit.
CONTROLLER NO
OUTPUT
1.Check if the thermostat is working, if the thermostat is
effective, and if the power is supplied to the controller.
2.Check if the communication is correct, the controller will
close all the relays if there is no data received in 30
minutes.
3 Match the thermostat and the controller again.
COMMUNICATION
FAILED
1. Check if the thermostat is working, if the therpstat is
effective, and if the power is supplied to the controller.
2.The distance between the thermostat and controller
should be longer than 1m, shorter than 100m in the field.
3 Match the thermostat and the controller again.
If you experience any other problems, call us for technical assistance.
A3900 Series Controller
Key position
Y1
W2
E / W1
NC
R
CONV. HP
FAN RELAY
Y2
B
O
G
C
Controller
HEAT RELAY
IN AC24V
Y1
W2
E / W1
NC
R
CONV. HP
FAN RELAY
Y2
B
O
G
C
Controller
COOL RELAY
IN AC24V
Y1
W2
E / W1
NC
R
CONV. HP
FAN RELAY
Y2
B
O
G
C
Controller
COOL RELAY
HEAT RELAY
IN AC24V
Y1
W2
E / W1
NC
R
CONV. HP
FAN RELAY
Y2
B
O
G
C
HEAT RELAY 2
Controller
COOL RELAY 2
COOL RELAY 1
HEAT RELAY 1
IN AC24V
Y1
W2
E / W1
NC
R
CONV. HP
FAN RELAY
Y2
B
O
G
C
HEAT (AUX)
EMER
CHANGE OVER VALVE
COMPRESSOR
Controller
IN AC24V
Y1
W2
E / W1
NC
R
CONV. HP
FAN RELAY
Y2
B
O
G
C
HEAT (AUX)
EMER
CHANGE OVER VALVE
COMPRESSOR 2
COMPRESSOR 1
Controller
IN AC24V
