If the screen on the CTH-291 is completely blank upon startup, it most likely means that either there is no power connected to the thermostat, or the thermostat is defective. To function, 24VAC needs to be supplied to terminals R & C in the CTH-291.
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We are excited to announce that Thermolec is now a part of SPX Technologies. ***Click for more information.***
We are excited to announce that Thermolec is now a part of SPX Technologies, a supplier of highly engineered products and technologies, holding leadership positions in the HVAC and detection and measurement markets.
Thermolec will integrate into the growing Electric Heat business platform of SPX’s HVAC segment alongside
Marley Engineered Products and ASPEQ. Together, we’re expanding our capabilities and geographical presence to deliver even greater value to engineers, contractors, and building owners – offering more integrated solutions for today’s energy-conscious world.
This move presents a great cultural fit for Thermolec – and its employees and customers. We’re excited to join the SPX family!
Read the full press release:
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