Tiffin Motorhomes WAYFARER 2021, Руководство пользователя

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HOW THE HEAT PUMP THERMOSTAT WOR K S
The RVComfort HP, RVComfort PHP, Coleman True-Air and RVComfort .ZC thermostats by
RVProducts Inc. are all capable of running not only and air conditioning unit, but also an
electric heat pump. Frequently Tiffin Motorhomes receives calls from customers who do not
understand the functions of the heat pump thermostat. This guide is a quick run through of the
information provided in the Thermostat Operation Manual which is included with each
thermostat.
The heat pump is an electric source of heat. It will supply and maintain heat assuming the
outside (ambient) temperature is above 40 degrees. This number of course can be slightly
higher or lower depending on the relative humidity. Higher humidity can cause the heat pump
to lose efficiency at a higher ambient temperature, while lower humidity can cause heat pump
to lose efficiency at a lower ambient temperature.
To avoid waking up and finding that the outside temperature has dropped below 40 degrees
and the inside of the motorhome is now 50 degrees, the heat pump thermostats are
programmed internally to recognize when the temperature drops five degrees or more from the
set heat temperature to the actual room temperature. When the temperature exceeds five
degrees or more between the two, the thermostat will default to the next available heat source.
The thermostat upon sensing a temperature split of five degrees or more in the electric heat
mode will bring the gas heat on to assist the electric heat. This is the first strike. A strike is
created by the thermostat having to change modes (or run dual modes to sustain a temperature
split). The electric heat and gas heat will continue to run together until the thermostat reaches
the set temperature and satisfies.
When the electric heat comes back on, it will be in electric heat only at this point. If the
temperature again drops five degrees or more from the set point, the thermostat will again bring
on gas heat to assist. This is strike two.
The system will then go through the above stated procedures. If the temperature should then
drop five or more degrees for a third time, the thermostat will give up the electric heat, lock the
electric heat system out for two hours (showing either DIFF on the display or FLASHING
GAS HEAT on the display) and will default to GAS heat only. You WILL NOT be able to run
any Electric Heat during this two hour lockout.
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