Install Instructions

Page 2 of 4 www.fast-stat.com
For installation assistance, our technical support line can
be reached at 1-800-775-4750, Mon-Thurs, 9am-5pm PST,
or emailed at [e-mail]
The Model 7000 supports the use of two modes, ‘Fossil
Fuel’ and ‘Supplemental Heat’. The Heat Pump Module has
two gray wires which can be connected to a thermostat to
operate the optional modes.
In Fossil Fuel mode, an outdoor temperature drop past the
set point of the heat pump thermostat will stop the heat
pump compressor and activate the indoor unit’s heating
system. When the outdoor temperature rises past the set
point, the indoor unit‘s heating system will stop, and the
heat pump compressor will activate.
In Supplemental Heat mode, an outdoor temperature
drop past the set point of the heat pump thermostat will
activate the indoor unit’s heating system, while the heat
pump compressor continues to run. When the outdoor
temperature rises past the set point, the indoor unit’s
heating system will stop.
If Fossil Fuel mode is used, the Heat Pump Module’s green
wire loop must be cut. If not, the heat pump will operate
in Supplemental Heating Mode. Tape back the wires after
cutting.
If the Heat Pump has a cool-active reversing valve, the
Heat Pump Module’s purple wire loop must be cut. This is
only required if operating in Fossil Fuel or Supplemental
Heating mode. Tape back the wires after cutting.
After configuring the Model 7000 for Fossil Fuel or
Supplemental Heat mode, follow the steps below to ensure
it is working properly.
After the Model 7000 has been configured, follow the
steps below to ensure it is working properly.
1. Set the heat pump thermostat to a temperature setting
at least 10°F below the current outdoor temperature.
2. Set the indoor thermostat to call for heat, activating
the heat pump.
3. Slowly increase the heat pump thermostat setting to
above the current outdoor temperature.
1. Remove the thermostat from its sub-base. With a
jumper, make a connection between ‘R’ and ‘G’ on
the thermostat terminal strip. The fan should activate.
Repeat this process for ‘Y1’, ‘Y2’, ‘W’, and ‘O/B’. If
all functions activate, the Model 7000 is working as
intended. Check that the thermostat is configured
properly.
2. Using a voltmeter, measure across the ‘R’ and ‘C’
terminals at both the indoor unit and heat pump. Both
should read 24VAC. If the heat pump has no voltage
and the Grounded Commons wiring method is being
used, check that the Indoor Unit Module and Heat
Pump Module are grounded properly.
3. At the Indoor Unit Module, disconnect the four wires
connected to the thermostat cable (red, black, purple,
and gray). Connect the Indoor Unit Module’s red and
purple wires together. The fan and backup heat should
activate. Connect the Indoor Unit Module’s red and
gray wires together. The compressor, reversing valve,
backup heat, and high-speed fan should all activate. If
the various functions are activated from this test but
not when called by the thermostat, there may be an
issue with the thermostat or thermostat cable.
4. Set the thermostat so the compressor is running
(on high-speed if 2-stage) and the reversing valve
is activated. At the Heat Pump Module, measure
between the orange and black wires (common). If
24VAC is measured, the wiring is correct up to the
Heat Pump module. If not, proceed to step #5.
5. At the Heat Pump Module, disconnect the orange wire
from the condenser cable. Connect the orange wire
to the ‘R’ terminal on the heat pump. The compressor
and reversing valve should activate. If both activate
from this method but not when connected normally,
check the condenser cable for shorts or breaks.
If in Fossil Fuel mode, the heat pump should stop and
the indoor unit’s heating system should start.
If in Supplemental Heat mode, the heat pump should
continue to run and the indoor unit’s heating system
should start.
1. Set the thermostat for ‘Fan Manual On’. The fan should
start. Then set it back to ‘Fan Auto Mode’. The fan
should stop.
2. Set the thermostat to call for cooling. The fan and
compressor should start. Depending on the type of
heat pump, the reversing valve may activate. Set the
thermostat to stop calling for cooling. The fan and
compressor should stop.
3. Set the thermostat to call for heating. The fan and
compressor should start. Depending on the type of
heat pump, the reversing valve may activate. Set the
thermostat to stop calling for heating. The fan and
compressor should stop.
4. Set the thermostat to call for ‘Backup’ or ‘Emergency’
heating. The indoor unit’s heating system should
start. Set the thermostat to stop calling for Backup or
Emergency heating. The indoor unit’s heating system
should stop.
Fossil Fuel or Supplemental Heat
Fossil Fuel or Supplemental Heat Test
Troubleshooting
Start Up Testing
Contact Us