Buggy program in Dometic Air conditioner
I have a Dometic Brisk II Duo-Therm purchased around 2018 in my Keystone rv. When it gets too cold and freeze mode is triggered, the compressor is supposed to shut off and the fan is supposed to go i...
Forum Discussion
Hi Dougrainer,
The short answer is, yes, I made sure of that.
The long answer, I usually set the temp to 77F in the morning. When the temp outside is under 80 or so, the system will reach 77F and cycle off and on from time to time as expected. When it gets up to about 85 or so outside, the system quits cycling and runs continuously. It starts to get frost on the lower part of the coil and then kicks into freeze mode even thou the room is above the thermostat setpoint.
With the fan on any of the three modes (auto/hi/low). When the freeze mode kicks in, the compressor and fan shut off at the same time. They will stay off for a few hours even if the room is 90F (because the fan is not circulating air).
I can force the system out of freeze mode by changing the fan mode to a different setting or by turning the system off (at the thermostat) and then back to cool.
When it gets up to about 90 or so outside, there is enough of a heat load to keep the coils from freezing, so it runs continuously but doesn't freeze.
Later in the day, when it starts to cool down outside, the system will freeze again. Even later in the evening, the system will go back to cycling as the temperature in the room fluctuates around the setpoint.
The short answer is, yes, I made sure of that.
The long answer, I usually set the temp to 77F in the morning. When the temp outside is under 80 or so, the system will reach 77F and cycle off and on from time to time as expected. When it gets up to about 85 or so outside, the system quits cycling and runs continuously. It starts to get frost on the lower part of the coil and then kicks into freeze mode even thou the room is above the thermostat setpoint.
With the fan on any of the three modes (auto/hi/low). When the freeze mode kicks in, the compressor and fan shut off at the same time. They will stay off for a few hours even if the room is 90F (because the fan is not circulating air).
I can force the system out of freeze mode by changing the fan mode to a different setting or by turning the system off (at the thermostat) and then back to cool.
When it gets up to about 90 or so outside, there is enough of a heat load to keep the coils from freezing, so it runs continuously but doesn't freeze.
Later in the day, when it starts to cool down outside, the system will freeze again. Even later in the evening, the system will go back to cycling as the temperature in the room fluctuates around the setpoint.
