heater with external controller question

m_class2g

Sponsor
i just bought a jehmco heater with controller. just installed it.

i have question regarding cooling or heating mode.

basicall:

- i set my temp to 84 F
- differential should i put 1 (does this mean the temp, if its ever off, will be by 1 F only?)
- lastly, should i enter in heater mode? C1 or H1? cooling or heating mode?


its my first time using this kind of temp controller. advise would be appreciated! thanks
 

h.l_nathan

New Member
I think its better to put a differential of 3, to save on electricity from start up.
put your mode for H1, cause your control is designed for both heating and cooling.
 

Boydo

New Member
i just bought a jehmco heater with controller. just installed it.

i have question regarding cooling or heating mode.

basicall:

- i set my temp to 84 F
- differential should i put 1 (does this mean the temp, if its ever off, will be by 1 F only?)
- lastly, should i enter in heater mode? C1 or H1? cooling or heating mode?


its my first time using this kind of temp controller. advise would be appreciated! thanks


Set the differential to 1 deg. or you will have 3-4 deg temperature swings which are not great for captive fish. The setting should be H1 for heat as C1 would be used to control a chiller. Best of Luck.
 
Top