VPLV User Manual
Troubleshooting guide
The majority of heat pump failures are caused
by: thermostat malfunctions / tripped circuit
breaker / or blown fuse. If the heat doesn't
come on after adjusting the thermostat to a
setting above room temperature try the
following:
Heat Pump will not start
6)
Check that power is being supplied to the
Heat pump
7)
Check that the circuit breakers are not
tripped.
8)
Check that the wiring is hooked up
correctly, and in the correct phase for 3
phase models.
9)
Check that the thermostat is set correctly.
10)
Check to insure that the circulation pump is
working.
11)
Check the particle filter and clean if
necessary.
12)
Check the manual reset high pressure
switch and reset it if necessary.
No heat
Be sure the thermostat is set to [Heat]
1)
Be sure the heat pumps circuit breaker is on
or that its fuse has not blown.
Check both the main electrical panel and
any secondary sub-panels that supply
power to the unit. If the circuit has blown
or tripped, reset the circuit breaker or
replace the fuse. If the circuit blows again,
there is a probably a short in the electrical
system providing power to the heat pump.
Call an electrical contractor.
2)
Check the heat pump's power switch is
“ON”
3)
Check the circuit breakers on the heat
pumps electrical panel
4)
Check the pressure safety switch: your heat
pump is protected by High and Low
pressure safety switches that will activate if
water line pressure is too high or low.
Tripped Low pressure switch
The low pressure switch is an automatic re-
set
Tripped high pressure switch
The High pressure switch is a manual re-set.
Remover the control panel cover reset the
High pressure switch
Action:
check that the system has been
vented correctly. Check that the particle filter is
not blocked. Check that the circulations pump
is working. Check that shutoff valves are open
6)
If it still doesn't work, be sure the
thermostat isn't faulty
7)
If none of this works, call your heat pump
engineer or repair technician.
Insufficient heat
If your heat pump runs and provides some heat
but not enough:
1)
First be sure the thermostat is set properly.
Try raising the temperature setting 5
degrees and waiting a few minutes.
2)
Be sure nothing is blocking the flow of
warm air.
3)
Check the heat pump particle filter. If it's
dirty clean it.
4)
If these simple steps don't work, have a
heat pump repair technician check your
system.
Heat pump trips circuit breaker
EAS models are not fitted with auxiliary heaters
however other heat pumps can be - auxiliary
heating elements are used in defrost cycles
with Swedish heat pumps. They can also be
used to provide heat when the weather gets
too cold causing the heat pump's efficiency
drop. These elements are automatically turned
on by the system, they may be drawing too
