T
Tim Williams
- Jan 1, 1970
- 0
Also, if the thermostat doesn't do it already, a similar "remain on for 5
minutes" relay is a great idea for the ventilation fan itself.
Tim
--
Deep Friar: a very philosophical monk.
Website: http://webpages.charter.net/dawill/tmoranwms
They replace the start capacitor. Your problem is the excessive heat down
there making that compressor start up against 500 psi internal pressures.
This explains why the caps blow during the heat waves. The compressor is
probably tripping out on overload until the condenser fan air can bring the
pressure down.I would go one step further and add a time delay relay between
the thermostat and the contactor. The time delay relay delays powering the
contactor for a full 5 minutes. Then an aux relay takes the t-stat voltage
and turns on the condenser fan immediately. This is a common technique used
in extreme conditions like rooftop units and trailer a/c's. When you do the
rewire use their 10000V HV wire or whatever it is.
Please view in a fixed-width font such as Courier.
..
..
..
..
..
..
..
.. +---------+ +---------+
.. | | | cndnsr |
.. Tstat>--+-----| aux rly |------+ fan |
.. | | | | |
.. | +---------+ +---------+
.. |
.. |
.. | +----------+
.. | | 5 min | +-----------+ +----------+
.. | | | | | | |
.. -----+ delay +----| contactor |-----| cmprssr |
.. | | | | | |
.. | on make | +-----------+ +----------+
.. | |
.. +----------+
..
..
..
minutes" relay is a great idea for the ventilation fan itself.
Tim
--
Deep Friar: a very philosophical monk.
Website: http://webpages.charter.net/dawill/tmoranwms
They replace the start capacitor. Your problem is the excessive heat down
there making that compressor start up against 500 psi internal pressures.
This explains why the caps blow during the heat waves. The compressor is
probably tripping out on overload until the condenser fan air can bring the
pressure down.I would go one step further and add a time delay relay between
the thermostat and the contactor. The time delay relay delays powering the
contactor for a full 5 minutes. Then an aux relay takes the t-stat voltage
and turns on the condenser fan immediately. This is a common technique used
in extreme conditions like rooftop units and trailer a/c's. When you do the
rewire use their 10000V HV wire or whatever it is.
Please view in a fixed-width font such as Courier.
..
..
..
..
..
..
..
.. +---------+ +---------+
.. | | | cndnsr |
.. Tstat>--+-----| aux rly |------+ fan |
.. | | | | |
.. | +---------+ +---------+
.. |
.. |
.. | +----------+
.. | | 5 min | +-----------+ +----------+
.. | | | | | | |
.. -----+ delay +----| contactor |-----| cmprssr |
.. | | | | | |
.. | on make | +-----------+ +----------+
.. | |
.. +----------+
..
..
..