Robertshaw 9500 User Manual download pdf (Page 10)

Operation

Setting or Changing the Setpoint Temperature

1. Press either the or button.

The display will show the current

temperature setpoint.

2. Press either the or button

to adjust the temperature setting

either up or down.

The display will return to the room temperature display five seconds after

the last input and the new setpoint will be saved.

Changing Temperature Differential

IMPORTANT: The temperature differential is factory set at 1 (.5°). This

means that whenever the room temperature changes by one half of a

degree from the temperature setting, the system will turn on. If the

system turns on too often, increase the temperature differential.

1. Press both and buttons

at the same time and hold for one

second. The display will show:

2. Press either the or button

to adjust the temperature

differential up or down.

The display will return to the room temperature five

seconds after the last input.

TROUBLESHOOTING

Symptom Remedy

7 8 9 10 11 12

Hot

Heating

Control

Fan

Control

Cooling

Control

(COOLING)

Transformer

(HEATING)

Transformer

Transformer



T

H

E

R

M

O

S

T

A

T

H

E

R

M

O

S

T

A

T

H

E

R

M

O

S

T

A

24 VAC

120 VAC

Hot

Heating

Control

Fan

Control

Transformer



24 VAC

120 VAC

T

H

E

R

M

O

S

T

A

Hot

Heating

Control

Heating

Control



Transformer



24 VAC

120 VAC

Hot

120 VAC

Hot

120 VAC

HEAT

COOL

4-WIRE

SINGLE TRANSFORMER

HEAT ONLY

2-WIRE

SINGLE TRANSFORMER

HEAT ONLY

3-WIRE

SINGLE TRANSFORMER



Factory-Installed

jumper



Factory- Installed

jumper

T

H

E

R

M

O

S

T

A

Hot

Cooling

Control

Fan

Control



Transformer



24 VAC

120 VAC

COOL ONLY

3-WIRE

SINGLE TRANSFORMER

HEAT

COOL

5-WIRE

TWO TRANSFORMER



NOTE: Both transformers 

must be in phase.

Cooling

Control

Fan

Control

NOTE: Cut center of

factory installed jumper

and bend back

NOTE: Remove factory 

installed jumper

Wiring Diagrams

The following is just a sample of the most common types of HVAC sys-

tems. Refer to your systems installation manual for wiring information.

Thermostat does not turn

on system

Check Wiring

(See “INSTALLATION”)

Check fuse. Replace with 2 amp

fuse if fuse has opened.

Thermostat turns on and

off too frequently.

Increase Temperature Differential

(See “DIFFERENTIAL).

Display is blank, flashing

or constant “LO BAT”.

Replace batteries.

System fan does not

operate properly.

Move fan option switch to either

gas or electric, to match system.

(See Installation).

Thermostat does not display

proper room temperature.

Check “F” Fahrenheit/”C” Celsius

switch located at top center of cir-

cuit board for proper position. If a

new selection is made, press

“RESET” button located directly

below LCD display..

Five Year Limited Warranty

Maple Chase Company warrants to the original contractor installer or

to the original consumer user, each new Maple Chase thermostat to be

free from defects in materials and workmanship under normal use and

service for a period of five (5) years from date of purchase. This warranty

and our liability does not apply to batteries or the merchandise that has

been damaged, caused by misuse, neglect, mishandling, alterations,

improper installation, or use in a way other than in accordance with

Maple Chase Company recommendations and instructions.

Maple Chase Company agrees to repair or replace at its option any

thermostat under warranty provided it is returned within the warranty

period, postage prepaid, with proof of the date of purchase. Cost of ther-

mostat removal or reinstallation is not the responsibility of Maple Chase

Company.

Repair or replacement as provided under this warranty is the exclusive

remedy of the consumer. Maple Chase Company shall not be liable for

any incidental or consequential damages for breach of any express or

implied warranty on this product, or under any other theory of liability.

Except to the extent prohibited by applicable law, any implied warranty of

merchantability or fitness for a particular purpose on this product is limit-

ed to the duration of this warranty.

Some states do not allow the exclusion or limitation of incidental or con-

sequential damages, or allow limitations on how long an implied warranty

lasts, so the above limitations or exclusions may not apply to you. This

warranty gives you specific legal rights, and you may also have other

rights which vary from state to state.

Maple Chase Company

2820 Thatcher Road

Downers Grove, Illinois 60515

United States of America

COOL OFF HEAT AUTO - ON

Changing Fahrenheit (F) to Celsius (C)

The thermostat is preset to display the temperature in degrees

Fahrenheit. You may change the display readout to Celsius if desired.

1. Move the manual switch marked “F” (Fahrenheit) and “C” (Celsius)

located at the top center of the circuit board to the desired setting.

2. Press RESET button located lust below the LCD display to register

the change.

The display will change to show the temperature in your desired temper-

ature scale. To return the thermostat to its original setting, repeat steps 1

and 2 above.

If problems with thermostat cannot be solved, call:

Technical Support: (800) 445-8299

Monday-Friday 7:30-5:30 CST

For after hours service, a 24-hour

Automated Help Line is available

For warranty returns, send thermostat, shipping prepaid to:

Uni-Line North America

Warranty Claims Department

515 S. Promenade

Corona, CA 91719

Differential

Setting Degrees

1.5°

2 1.0°

3 1.5°

Hot

Fan

Relay

Transformer

24 VAC

120 VAC

HEAT PUMP WITH

COOL ACTIVE

REVERSING VALVE

Pre-Installed jumper

Compressor

Contactor

Reversing

Valve

Hot

Fan

Relay

Transformer

24 VAC

120 VAC

HEAT PUMP WITH

HEAT ACTIVE

REVERSING VALVE

Pre-Installed jumper

Compressor

Contactor

Reversing

Valve

NOTE: Installer must place jumper

between “W” and “Y” terminals.

NOTE: Installer must place jumper

between “W” and “Y” terminals.

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Robertshaw 9500 User Manual Page 10

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