20 Most Recent
Shaw Robert RS-9420 Thermostat Questions & Answers
I cannot get robert shaw theromostat to reset
If you are even reasonably good with a screwdriver, you should be able to replace it yourself.
Turn off the breaker, pop off the cover and take off one wire at a time and put it in the exact place it came from onto your new one.
eBay has new RS thermostats for $30 non-programmable.
$60 programmable.
For $280 I'd be willing to try it myself 4X and still save $40.
I have a Robert Shaw thermostat and it converted
The thermostat is preset to display the temperature in degrees
Fahrenheit (US models) or degrees Celsius (Canadian models). The
temperature display can be changed. Press and hold both the
?° and ?°button for three seconds. The display will read F or C.
Release buttons. Press the ?° or ?°button to switch the display.
What do two snow flakes on the left side of the
The double snowflake means that the second stage cooling is on. (One snowflake indicates first stage cooling.) This gives a greater temperature change in extremely hot conditions with than you could get with a single cooling medium and drier air in your home.
From the patent: A two stage cooling system in which the first stage's cooling affect is transferred to the second stage through direct contact with an oil-like material. The oil-like material is cooled by direct contact with water which has been evaporatively cooled. The oil-like material is then utilized to cool the air stream prior to the second stage evaporative cooling. The use of an oil-like material in the first cooling stage of evaporative cooling allows a relatively dry air stream to be produced so as to fully capitalize upon the evaporative cooling affect of the second stage cooler.
The second stage comes on if your system hasn't reached the desired temperature at the thermostat within a programmed length of time (5 minutes is a usual setting). BTW: Your system also has two stage heating.
I hope this helps.
Cindy Wells
Thermostat kicks on and off
I am not familiar with this unit but I would first replace the batteries if there are any. Be sure the heat does not blow on the thermostat when on. If that does not solve the problem I would replace the thermostat.
Our Robert Shaw thermostat 9520 just went blank.
Try replacing the batteries.
Remove the cover by using a coin or screwdriver to prise it off. Insert the coin at the left side between the backing plate and the the cover, and twist.
Romove old batteries and insert new ones.
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