Robertshaw RS5220 - Troubleshooting

14
To unlock the buttons:
1. Push and hold the and buttons for 5 seconds until the
request for password is displayed.
2. Enter the digits for the password by pressing the and
buttons. Press the to move to the next digit. Press to
move back.
3. When the correct password is set, wait for 5 seconds to unlock
the system.
4. If the wrong password is entered the display will flash -- for 5
seconds then return to normal.
Once the security has been disabled, a password needs to be
re-created to protect the settings.
Thermostat Specifications
Operating Voltage 18-30V AC
Maximum Load Current 1 Amp Max per Output Terminal
4 Amp Total Load
Output Type Latching Relays
Batteries 2 AA Alkaline in Series
Battery Life 2 Years Typical
Ambient Operating Temperature 14 °F (-10 °C) to 122 °F (50 °C)
Storage Temperature -4 °F (-20 °C) to 140 °F (60 °C)
Operational Mode Chart:
Demand
Conventional
(Non-HP)
Heat Pump
(HP) Elec
Heat Pump
(HP) Gas
First Stage Heat W1 + G* Y1 + G + B Y1 + G + B
Second Stage Heat W1 + W2 + G*
Y1 + Y2 + G + B
or
Y1 + W2 + G + B
Y1 + Y2 + G + B
or
Y1 + W2 + G + B
Third Stage Heat N/A
Y1 + Y2 + E +
G + B
or
Y1 + W2 + E +
G + B
E + B
Emergency Heat N/A Y1 + G + O Y1 + G + O
First Stage Cool Y1 + G Y1 + Y2 + G + O Y1 + Y2 + G + O
Second Stage Cool Y1 + Y2 + G E + G E
* G: G is off for Gas, on for Elec