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Robertshaw 300-202 User Manual

Operating instructions, Description of icons, Dip switch options and functions

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DESCRIPTION OF ICONS

Display icons vary according to the model. Your thermostat may
not display all of the icons shown.

Outdoor Hi & Lo Temperature Balance Points (Heat Pump Only)
With the optional Electronic Outdoor Temperature sensor, you can
select the outdoor balance points to inhibit the auxiliary heat
and/or compressor.
HibP – Press and hold the OUTDOOR button, then press the
MODE button. HibP will appear on the display. Raise or lower the
HibP by pressing the

§ or ¨ button to set the temperature above

which the Auxiliary heat is locked out. Press the outdoor button
while showing the HibP and the thermostat will switch to show
LobP. LobP is used to lock out the compressor. Outdoor temper-
atures below the LobP will lock out the compressor. The factory
HibP and LobP setpoints are +48°C and -48°C.

DIP SWITCH OPTIONS AND FUNCTIONS

Positioning the DIP switches in either the ON or OFF position
enables you to choose between two different options. The DIP
switches are located on the interior of your thermostat and may
be accessed by following the procedure for removing the thermo-
stat from the subbase. The following list describes your DIP
switch options.

Switch No. DIP Switch OFF

DIP Switch ON

1

Normal

Add On

2

Not used (OFF position)

Not used

3

4 minute minimum ON

2 minute minimum ON

4

Keypad unlock

Keypad lock

5

Economy

Comfort

6

Single stage

Multi-stage

7

LED #1+No icon

LED #1+

7

Filter icon

8

LED #2+No icon

LED #2+

6

Fault icon

1. Normal or Add On Heat Pump In the NORMAL position the ther-

mostat will allow the compressor and the auxiliary heat to be on at
the same time. In the ADD-ON position, the compressor is turned
off with a call for auxiliary heat.

2. Not Used This switch must remain in the OFF position.
3. 2 Minute or 4 Minute ON Times This option allows you to run the

equipment for either a 2 or 4 minute minimum off and on time.

4. Keypad Lock

5

In the ON position locks out all buttons except the

OUTDOOR temperature button.

5. Economy/Comfort In the OFF position, the thermostat will be in

ECONOMY mode. In the ON position the thermostat will be in
COMFORT mode, and will satisfy the temperature setting using any
stages necessary.

6. Single or Multi-stage Set to OFF for 1 compressor stage of heat-

ing or cooling (single stage) or ON for equipment with 2 compres-
sor stages of heating and/or cooling (multi-stage).

7. LED #1 + Indication In the OFF position LED #1 will light when the

terminal is energized. In the ON position LED#1 will light and a
Filter

7

icon will be displayed on the LCD when the terminal is

energized.

8. LED #2 + Indication In the OFF position LED #2 will light when the

terminal is energized. In the ON position LED#2 will light and a
Fault

6

icon will be displayed on the LCD when the terminal is

energized.

SPECIFICATIONS

Rated Voltage

20-30 VAC, 24 nominal

Rated A.C.

0.050 Amps to 0.75 Amps continuous

Current

per output with surges to 3 Amps Max.

Rated D.C.

0 Amps to 0.75 Amps continuous

Current

per output with surges to 3 Amps Max.

Control

Heating: 38° to 88°F in 1° Steps

Range

5° to 30°C in 1° Steps

Cooling: 60° to 108°F in 1° Steps

16° to 40°C in 1° Steps

Thermostat
Measurement Range

28° to 124°F or 0° to 48°C

O.D.T. Displayed
Range

-50° to 119°F or -48° to 47°C

Control Accuracy

±0.5°C at 20°C, ±1°F at 68°F

Minimum

(between heating and cooling)

Deadband

2°F or 1°C

NOTE: This thermostat contains electronic circuitry replacing the
conventional mechanical anticipator.

One (1) Year Limited Warranty

The manufacturer warrants to the original purchaser that its
product and component parts will be free from defects in
workmanship and materials for a period of one (1) year from
the date of purchase. Return to the original point of purchase
for replacement of your product.

Warranty Limitations
This warranty begins at date of purchase.
Warranty is Void if:
The date code is defaced or removed.
The product has a defect or damage due to product alteration,
connection to an improper electrical supply, shipping and han-
dling, accident, fire, flood, lightning, or other conditions beyond
the control of the manufacturer.
The product is not installed according to the manufacturer’s
instructions and specifications.
The product has been installed near sources of electromagnet-
ic interference (EMI) such as arcing relay contact.
Owner’s Responsibility
Provide proof of purchase.
Provide normal care and maintenance.
Pay for freight, labor and travel.
Pay for service calls related to product installation.
Return any defective product.
In no event shall the manufacturer be liable for incidental or
consequential damages.
This warranty gives you specific legal rights and you may have
others which vary by state and/or province. For example, some
states and/or provinces do not allow the exclusion or limitation
of incidental or consequential damages so this exclusion may
not apply to you.
The manufacturer’s continuing commitment to quality products
may require a change in specifications without notice.
This equipment, if installed in strict accordance with the manu-
facturer’s instructions, complies with the limits for a Class B
computing device pursuant to Subpart J of Part 15 of FCC rules.

NEW AND IMPROVED FEATURES

Your new electronic thermostat has been made even better by the
introduction of several new and improved features. Building on its
reputation for efficient and dependable operation, your thermostat
now offers the following list of enhancements.

Thermostat and Sensor Calibration
Release 3 provides easy calibration of the thermostat and remote
sensors. Simply press and hold the FAN button for 10 seconds
and adjust with the

¨ or § buttons.

Push Button Auto Repeat
Programming is easier with the push button auto repeat feature.

GENERAL INFORMATION

The thermostat normally displays room temperature, mode of
operation and whether cooling or heating is currently on. The
six buttons on the front of the unit allow complete control of
your equipment.

You may select different heating and cooling setpoints for the
system to maintain, e.g., 70° in heating and 75° in cooling.
Raising or lowering the setpoints in heating or cooling is as sim-
ple as pushing a button. In addition, you may choose to display
the temperature in °F or °C.

The thermostat also allows you to select continuous fan operation
(useful when using an air cleaner), or have the fan come on with
the equipment.

BUTTON FUNCTIONS

Outdoor

Press to display the outdoor temperature (optional)

Mode

Press to select cool only, heat only, auto (cool and
heat), off, or emergency heat

Fan

Press for continuous fan or auto fan

Day/Night

Press to alternate between day and night
temperature setpoints

USER CONTROLS

MODE

Select the desired mode of operation by repeatedly pressing the
MODE button:

– Indicates cooling system only (the word COOL is

displayed for 5 seconds)

– Indicates heating system only (the word HEAT is

displayed for 5 seconds)

– Indicates both the heating and cooling systems

(the word AUTO is displayed for 5 seconds)

Blinking indicates cool ON

Flickering indicates heat ON

OFF – Disables controller so equipment will not operate

(fan operation is still possible in this mode)

Eht

– Emergency heat

COOLING:

Select the temperature you want your equipment to maintain while
in the cooling mode by pressing and holding the

¨ or § buttons.

The control setpoint temperature is displayed for 5 seconds.

HEATING:

Select the temperature you want your equipment to maintain
while in the heating mode by pressing and holding the

¨ or §

buttons. The control setpoint temperature is displayed for 5 sec-
onds.

AUTO CHANGEOVER MODE

You may set the thermostat to automatically switch from heating
to cooling mode by pressing the MODE button until the word
AUTO and both the heating

and cooling

icons appear on the

LCD. The thermostat will energize the heating or cooling system
based on the temperatures established for both modes.

FAN:

The fan will come on automatically when the system is operating,
but there is no indication of this on the display. To select continu-
ous fan operation, press the FAN button and the display will
show

. This is recommended for electronic air cleaners and

continuous ventilation requirements.

OFF MODE

To turn off the heating or cooling system, press the MODE button
until the word OFF appears on the LCD. It will remain displayed
until the mode is changed. The off mode prevents the system
from being energized.

Avoid using the off mode during extremely cold weather to pre-
vent damage to the equipment from freezing.

TEMPORARY TEMPERATURE OVERRIDE WITH

KEYPAD LOCKED

(The keypad may be locked to prevent tampering by selecting the
ON position of DIP switch #4.)
If the keypad is locked to prevent tampering you may still tem-
porarily adjust the setpoint by ± 3° F or ± 3° C of the pro-
grammed day setpoint. Press the

¨ or § to raise or lower the

setpoint for a
1-hour period.

Operating Instructions

Digital Heat Pump Thermostat

Model 300-202

111-111B