Cardiff A3602 User manual

on
auto
fan
heat
off
cool
system
PROGRAMMABLE THERMOSTAT
Owners Manual
Model : A3602
Congratulations!
Your new thermostat will provide years of reliable service. By saving energy, your
thermostat will pay for itself during its first season of use. Thanks you for buying our
product!
Please read this manual for complete instructions on installing and operating your
thermostat. If you require further assistance, please feel free to contact us
IMPORTANT INFORMATION
1. This thermostat is designed to work on the following systems:
Gas – Standing Pilot Oil – Fired Furnace
Gas – Electronic Ignition Single Stage Heat Pumps –
with no auxiliary heat
Gas – Fired Boilers Electric Air Conditioning
Gas – Milivolt Systems Electric Furnace
Oil – Fired Boilers
This thermostat will NOT control multistage heat pumps or 110/220V baseboard
electric heating systems.
2. Temperature Range
This thermostat can be programmed between 45˚F and 95˚F (7˚C and 35˚C). However,
it will display room temperatures from 30˚F to 99˚F (0˚C and 37˚C). “HI” will be
displayed if the temperature is higher than 99˚F (37˚C), and “LO” will be displayed if
the temperature is lower than 30˚F (0˚C).
This thermostat will automatically cutoff in Heat mode if the temperature rises above
95˚F (35˚C), and automatically cutoff in Cool mode if the temperature drops below
45˚F (7˚C).
3. Compressor Protection
This thermostat provides a 4 minutes delay after shutting off the cooling system before
it can be restarted. This feature will prevent damage to your compressor caused by
rapid cycling. It does not prevent a rapid compressor restart due to short power
outages.
4. Battery Warning
One fresh AA alkaline batteries should provide well over one year of service. However,
when the batteries become drained, the Low Battery Indicator will flash on the display.
When this message occurs, install new alkaline batteries. You have approximately 1
minute to change the batteries and keep the thermostat’s clock and program settings.
Once the batteries have become too low to ensure proper operation, your system will
be turned off, and the display will be cleared except for flashing Low Battery Indicator
on the LCD display.
CAUTION: When only the Low Battery icon flashes on the display,
the thermostat is shut down, and your system will no longer operate.
In this condition, there is no temperature control of your dwelling.
NOTE: The backlight will not function when the thermostat is in low battery condition.
NOTE: If you plan to be away from the premises over 30 days, we recommend that
you replace the old batteries with new alkaline batteries prior to leaving.
5.Power supply
The thermostat shall be powered by battery.
FEATURES
Structure of thermostat and explanation for the keypad
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OPERATION
System Selector Switch
The System Selector Switch on the front of the thermostat
determines the Operating mode of the thermostat. You may
select COOL ,OFF,HEAT.
NOTE: Anytime you install or remove the thermostat form the
wallplate, slide the System Selector to the OFF position to prevent the possibility of a
rapid system On-Off.
Fan Switch
The Fan switch should normally be located in the AUTO position.
The Fan will be turned on along with normal operation of your
system. In a normal gas or oil furnace, the Fan will be turned on
by your furnace after its warm-up delay. For electric heat, air
conditioning, and heat pump operation, the Fan will turn on with the system.
To run the Fan on continuously, slide the Fan switch to the ON position
Heating System
1. Move system switch to heat mode. If the auxiliary heating system has a standing
pilot, be sure to light it.
2. Press to adjust thermostat setting to 1

SPAN

above room temperature. The
heating system should begin to operate. The display should show HEAT . However, if
the setpoint temperature display is flashing, the compressor lockout feature is
operating (see Configuration menu, item 5).
3. Press to adjust the thermostat below room temperature. The heating system should
stop operating.
Cooling System
1. Move SYSTEM switch to select the Cool mode.
2. Press to adjust thermostat setting below room temperature. The blower should
come on immediately on high speed, followed by cold air circulation. The display
should show “COOL”.
3. Press to adjust the temperature setting above room temperature. The cooling
system should stop operating.
CONFIGURATION MENU
INSTALLER/CONFIGURATION MENU
Step Press
Button
Displayed
(Factory
Default)
Press up or
down key to
select
Comments
1 PROG RECO(OF) ON Recovery function ON or
OFF
2 PROG (SPAN)2 1,3 Span(one stage)
3 PROG BLIT(ON) OF BackLight
4 PROG (TEMP)F C Selects temperature
display °F or °C
5 PROG HOUR(12) 24 Selects time format
display 12hours or
24hours
6 PROG COHP(ON) OFF Compressor Lockout
7 PROG FACT(0) 1 Select 1,all the setting will
go back to factory default
The configuration menu allows you to set certain thermostat operating characteristics
to your system or personal requirements. Set SYSTEM switch to OFF, then
simultaneously press PROG keys to enter configuration menu. The display will show
the first item in the configuration menu. The configuration menu table summarizes the
configuration options. An explanation of each option follows .Press PROG key to
change to the next menu item. To exit the menu and return to the program operation,
press Hold/Run Key. If no keys are pressed within thirty Seconds, the thermostat will
revert to normal operation.
1) Select Energy Management Recovery OFF or ON
Your thermostat is set from the factory with the Auto Recovery Feature enabled, which
complies with the EPA ENERGY STAR Program. IF you prefer to use normal recovery,
slelect the RECO to ON.
Auto Recovery calculates how early to turn you system back on, so that the room
temperature is already comfortable by the start of the comfort temperature program
period. Auto Recovery work’s in both Heat and Cool modes.
When the thermostat is in Auto Recovery mode, the display will alternate “RECO” with
time, and the program indicator will flash.
Auto Recovery can be disabled by sliding the Recovery switch on the circuit board to
disable.
Auto Recovery will not operate if Permanent hold or Temporary hold is in operation.
Auto Recovery can be canceled manually if Hold/run is pressed during the recovery
process.
Auto Recovery will be canceled and change to next period.
2)Fast or Slow Crycle Selection
3)Select Backlight function OFF or ON
4)Select °F or °C Readout. when you change this parameter. the programming come
back to fault. you have to set the programming again.
Changes the display readout to Centigrade or Fahrenheit as required
5) Selects time format display 12hours or 24hours
6)Select Compressor Lockout COMP OFF or ON
Selecting COMP ON will cause the thermostat to wait 4 minutes before turning on the
compressor if the heating and cooling system loses power. It will also wait 4 minutes
minimum between cooling and heating cycles. This is intended to help protect the
compressor from short cycling. Some newer compressors already have a time delay
built in and do not require this feature. Your compressor manufacturer can tell you if
the lockout feature is already present in their system. When the thermostat
compressor time delay occurs it will flash the set point for about four minutes.
7) This model select 1 to back factory Default. The thermostat and controller must be
re-match.
Selector Switches 
In order for this thermostat to control your system, the system type must be matched
by the selector switches on the printed circuit board inside the thermostat.
Heating System Selector (HG – HE switch)
The factory position for this switch is in the “HG” position. Leave it in this position if you
have a gas furnace or an oil burner. If you have an electric furnace, test to see whether
the Heat and Fan come on as expected after installation. If the Fan operation is normal,
leave it in the “HG” position. If the Fan does not come on within a minute of the
thermostat calling for heating, change the switch position to “HE”. The system selector
has no effect in the cooling mode.
NOTE: “HG” position is for gas and most other systems. “HE” position is for certain
electric systems having a fan relay.
System Selector (STANDARD – HEAT PUMP switch)
The factory position for this switch is in the STD position. Leave it in this position if you
have ANY system that uses gas, oil, electric, or hot water heating. If you have a
single-stage Heat Pump (no auxiliary or emergency heat source), then slide the switch
to the HP position. Be sure the reversing valve wire is connected to the correct terminal
for your heat pump (Rc/O) or (Rh/B).

Setting Time And Day
Remove the mylar label covering the LCD display window before operating thermostat.
Initial display after power-up. The temperature will update after a few seconds.
During time and day setting mode , the temperature will disappear.
Press Display Reads
Step 1 Press Hour key. The current hour and AM or PM indicator are
flashing.
Press up and down keys until right hour
appears on display.
Note AM/PM
Step 2 Press Min key. The current min are flashing.
Press up and down keys until right min
appears on display.
Step 3 Press Day key. The current week are flashing.
Press up and down keys until right week
appears on display.
Step 4 Press hold/run key. The display will back to normal.
Or after 30 seconds, the thermostat will return to normal automatically.
Programming
The following time and temperature settings are pre-programmed into the thermostat:
Temperature in ˚F (˚C)
Program Number Time Heat Cool
1 6:00 am 68˚F(20˚C) 78˚F(26˚C)
2 8:00 am 60˚F(16˚C) 85˚F(29˚C)
3 4:00 pm 68˚F(20˚C) 78˚F(26˚C)
4 10:00 pm 60˚F(16˚C) 82˚F(28˚C)
All 7 days of the week have the same default programs.
Manual Programming
Your thermostat can be programmed for weekdays and weekends, or have unique
programs for all 7 days. Use Weekday /Weekend Programs or 7-day Programming to
enter or revise programs to match your Personal Program Schedule. The same steps
are used when entering programs for the first time.
Familiarize yourself with Manual Programming, so that you can easily modify your
programs as your comfort needs change. The example below demonstrates the
Manual Programming method.
NOTE:
1

The program time can be set in 10-minute increments, and remains the same for
both Heat and Cool programs.
2

The program temperature can be set in increments of 1˚F (1˚C).
3

The Heat setpoint can not be set higher than the Cool set point, and the Cool set
point can not be set lower than the Heat set point.
4

When setting the program time, note the AM/PM indicator.
5

With the Auto Recovery feature enabled, you do not need to set your comfort
program times early. Auto Recovery will determine how early Recovery will determine
how early to turn your system on, so that the room is comfortable at the program time.
Weekday/Weekend Programming
Weekday Programs
Press Display Reads
Normal display of time, temperature,
and day of the week.
Step 1 Selects days Mon to Fir for same set of 4
programs each day.
Step 2 Program indicator(1) is displayed.
Mon to Fir is displayed.

Step 3 The Program hour are flashing.
Press to change the hour.
Note AM/PM
Step 4 Press again to change to the minute position. The
period minute will be flashing.
Press to change the minute
Step 5 Press again to change to the program COOL set
temperature. The period program will be flashing.
Press to change the temperature.
Note HEAT/COOL
Step 6 Press again to change to the program HEAT set
temperature. The period program will be flashing.
Press to change the temperature.
Note HEAT/COOL
Weekday program 1 is complete.
Step 4 Press PROG to move to program 2,3, and 4 and follow the same steps.
Use to insert or change time and temperature of other
programs.
Selects weekend days Sat, Sun for same set
of 4 programs each weekend day.
Follow steps 2-4 to enter programs.
Similar to weekday programming.
to insert weekend programs.
Similar to weekday programming.
to insert Individual programs.
NOTE: Another approach to programming is to first program all weekdays Mon
through Fir and Sat and Sun as same programs. Then, display and change the
programs of only those days which will have different programs.
Temporary Manual Override
To temporarily change the current set temperature without affecting your program:
Press up or down key for less than 1 second to check
Setpoint..
Press up and down to change to your desired New
temperature.
Press to RUN to normal mode or wait 30 seconds for it to return
automatically.
The current program number will flash to signify the Temporary Override.
At the next program change, the Temporary Override is canceled, and the
next program temperature becomes the setpoint temperature.
To end the Temporary Manual Override:
Press and wait for HOLD to display on the lcd.
Press hold/run key twice. This will return the set temperature to the current
program set temperature.
PROG
DAY
PROG
P R O G
DAY
PROG
PROG
PROG
PR OG
heatoff
cool
system
on auto
fan
Battery cover:
LCD Display:Shows
Time,Day,Temperature,
and other feature
information as required.
Up and Down Key:Key for
changing the Temperature
setting. Also used for increasing
and decreasing selections in the
Time,and Span
Fan Switch: Fan
switch for Automatic
or Continuous fan
operation.
System Switch:
Selector switch for
Cool,Off,Heat.
Front Door: To open or close
the door by pressing it softly
Open with one finger
from side lips.
Battery Compartment:
Front access allows
easy insertion of two
AA 1.5V batteries.
Soft touch programming
buttons (see below)
HOUR
MIN
DAY
PROG
/RUN
HOLD
P R O G
DAY
PROG
P R O G
DAY
PROG
/RUN
HOLD
/RUN
HOLD

Permanent Override or a Designated Day Override
To hold your Manual Override for vacation or Until a Designated
Day.
Press to make the current program temperature the
HOLD temperature. HOLD will be displayed on the
LCD, and the Program number will disappear.
Follow the Temporary Manual Override instructions
above to change the Permanent Manual Override
temperature.
You can confirm the held set temperature by pressing
for less than 1 second.
Press again. Hold day will be displayed on the LCD
and the clock will disappear
Press Hour key to increase override days.
Press Day key to reduce override days.
Follow the Permanent Override instructions above to change the a
Designated Day Manual Override temperature.
To end Override:
Under Permanent Override Press hold key twice. Under a Designated Day Override
press the hold once. The thermostat will return to the current program, and the HOLD
display will be canceled.
Filter Monitor
Your thermostat also keeps a record of the number of Days your filter has been in use.
To maximize your system’s performance and energy efficiency,
change or clear your filter regularly.
When the total fan run time reaches 400 hours, you need clean
or change your system’s filter, “FILTER” will continue to display
until the counter is set back to zero.
Press to review total filter usage. The “FILTER” display.
Then show the filter Monitor counter . After 20 seconds, the display will return to
normal mode, or you can hit RUN to exit immediately.
The Filter Monitor will display up to 100 Days of usage. In this example, the counter is
at 10 Days.
To reset the Filter Monitor counter, depress FILTER for 3 seconds when the filter
monitor day show. The display will blink, and the counter will be reset to zero.
Keyboard lock
The keyboard can be locked to prevent unauthorized changes to the thermostat.
To lock or unlock the keyboard, press and hold run Key for 3
seconds. The keyboard is locked. when LOCK appears on the
display.The keyboard is unlocked.the lcd will blink.
All keys are locked, Any time a key is pressed, LOCK will appear
on the display for 1 second.
Error Mode 
If the thermostat is unable to control your system due to an
unexpected battery problem, the thermostat will enter Error Mode.
In this condition, the thermostat flashes “E1”,“E2”, on the LCD
display, and shuts off your system. To correct this problem, replace
the battery with one new AA alkaline battery, even if you have
recently replaced them. Press the reset button once with a small pin
and hold for two seconds then reprogram.
If Error Mode returns, please call us for further information.
Information.
Lcd display information Lcd display information
E1 Sensor Error E2 EEPROM Error
Low Battery Warning
Your thermostat has a lower battery warning system. When the
battery are first detected to be weak, the low battery warning is
indicated by battery symbol “bAtt” flashing on the LCD display
At your earliest convenience, you need to replace the battery
with 1 new AA alkaline battery.
INSTALLATION
What You Need
This thermostat includes two #8 slotted screws and two wall anchors for mounting. To
install your thermostat, you should have the following tools and materials.
Slotted Screwdriver(s)
Small Philips screwdriver
Hammer..
Electric drill and 3/16” bit
One1.5V (AA) size alkaline batteries (included)
Remove Old Thermostat 
CAUTION: Do not remove any wiring from existing thermostat before reading the
instructions carefully. Wires must be labeled prior to removal.
INPORTANT! Turn off the power to the furnace at the main power panel or at the
furnace.
Remove existing thermostat cover and thermostat. See Figure 1. Some thermostats
will have screws or other locking devices that must first be removed. Once the wall
mounting plate is exposed, look for wires. If wires are not visible, they may be
connected to the back of the wall plate. Again, look for screws, tabs, etc. Some models
have doors that open to expose wires and mounting screws. See Figure 1.
Typical Home Thermostats
Figure 1
Wiring Labeling
Each wire coming from the wall to the existing thermostat is connected to terminal
point on that thermostat. Each of these terminal points is usually marked with a code
letter as shown in Table A below.
Note that this thermostat has multiple function terminals that allow Single-Stage Heat
Pump capability. Standard systems use: Rh, Rc, G,
Y, W. [Single-Stage Heat Pumps use: R, Y, G, and O
or B.] Table A below shows the multiple functions of
the terminals. Use the terminals that match your
system.
The number of wires in your system can be as few
as two (for heat only systems), as many as eight, or
any number in between. If you follow the labeling
procedures correctly, you do not have to be
concerned about how many wires there are.
There is often no terminal marking on the existing thermostat of two wire, heat only
systems. Just connect either of the wires to the RH terminal, then connect the other
wire to the W terminal to complete the circuit.
IMPORTANT! BEFORE DISCONNECTING ANY WIRES, APPLY THE
SELF-ADHESIVE LABELS PROVIDED TO THE WIRE AS SHOWN IN TABLE A
BELOW. (For example, attach the label marked W to the wire that toes to the W or H
terminal on your existing thermostat.) IGNORE THE COLOR OF THE WIRES since
these do not always comply with the standard.
After labeling wires, disconnect them from the existing thermostat.
Remove existing wall plate. To make sure wires do not fall back into wall opening, you
may want to tape them to the wall.
If hole in wall is larger than necessary for wires, seal this hole with insulating material
so that no hot or cold air can enter the back of the thermostat from the wall. This air
could cause a false thermostat reading.
Table A
If the code letter on your
existing
Thermostat is
then mark the wire with
label shown
and connect to
thermostat terminal
shown
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

NOTE: Do not connect a “Common” wire (sometimes labeled “C”) to any terminal on
this thermostat. Tape up the wire and do not use. This wire provides electricity to
non-battery powered thermostats.
Mount Wall plate and Thermostat 
Remove the wall plate from your thermostat by pressing the release tab on the
bottom of the thermostat. See Figure 2.



Figure 2.
Position wallplate on wall and pull existing wires through large opening. Then level
for appearance. Mark holes for plastic anchors provided, if your existing holes do not
line up with those on the wall plate.
Drill holes with 3/16” bit and gently tap anchors into the boles until flush with wall.
Reposition wallplate to wall, pulling wires through large opening. Insert mounting
screws provided into wall anchor and tighten. See Figure 3.

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Figure 3.
NOTE: 5- Wire Systems
If your thermostat has one wire marked R or Rh (2, 3, or 4-wire system), then leave the
jumper wire between the Rh and Rc terminals on the wall plate. Otherwise, if you have
separate Rh and Rc wires (5-wire system), then remove the jumper wire between the
Rh and Rc terminals.
Connect Wires and Mount Thermostat to Wallplate
Match and connect the labeled wires to the appropriate coded terminal screws on the
wallplate. (See Figure 4, 5.) Ignore any wires which may be present, but which were
note connected to the old thermostat.
Refer to the Wiring Diagrams below to be sure your system is wired correctly.
If your system is a single stage heat pump and uses an O or B wire, you must move
the System Selector switch inside the thermostat to the Heat Pump position. If you
have a normal furnace or electric system, leave the switch in the Standard position.
Refer to the System Selector section on the back for more information on this switch.
Be sure to tighten the terminal screws securely, otherwise a loose wire could cause
operational problems with your system or thermostat.
Push excess wires back into the hole to prevent interference when installing the
thermostat to the wallplate.
Make sure the System Switch is set to OFF, and the Fan Switch is set to AUTO.
Insert the bottom tabs on the thermostat body into the slots at the bottom of the
wallplate. Press the top of the thermostat body to snap it into the wallplate. Refer to
Figure 6.
NOTE: Do not force the thermostat onto the wallplate, as the terminal pins may be
damaged. If it does not snap properly, the thermostat may not work.
Insert the two AA size alkaline batteries, observing the polarity marked inside the
battery compartment.
Switch on the main power at the panel or furnace.
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

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
Figure 4 Figure5
Wiring Diagrams
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.
TROUBLE SHOOTING
Problem Solution
SCRAMBLED OR
DOUBLE DISPLAY
(numbers over
numbers)
1.Remove clear mylar sticker.
NO DISPLAY 1.Check battery connections and battery
2.Relplace Battery
ENTIRE DISPLAY
DIMS
1.Replace 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 Fan 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.
5. Replace battery.
6. Make sure your furnace blower door is closed properly.
ERRATIC DISPLAY
1. Replace Battery
CONTROLLER NO
OUTPUT 1.Check if the thermostat is working, if the battery is effective.
COMMUNICATION
FAILED
1. Check if the thermostat is working, if the battery is
effective, and if the power is supplied to the controller.
If you experience any other problems, call us for technical assistance.
WGYRH
RC
Wall mounting Plate
Thermostat
Cover
Wall mounting Plate
Thermostat
Cover
HOL D
HOL D
D A Y
H O U R
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
$%


$""
 

W allpla te
T e rm in a ls

Ju m pe r
   

 !

W allpla te
T e rm in a ls





 

   
Ju m pe r
!


 

 
W allpla te
T e rm in a ls





   

 !

Ju m pe r
& "
'& "
"#&#!
& "
(& "
(& "
Connect to proper Reversing Valve
Terminals. See Table A