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P a g e
TROUBLESHOOTING
Removing blower/control assembly
Blower and control assembly can be removed as a single piece:
Turn off power to ecosmart
Disconnect AIR OUT temperature sensor (white plug/socket) just above front centre
plate
Disconnect power, thermostat and other wiring from within control box
Undo (Qty. 2) #1/4-20 bolts, lockwashers and flat washers
Slide out blower assembly
Thermostat call error
If the ecosmart does not run when the thermostat is calling, jumper R to W for heating or R to Y
(Y2) to verify if the problem is with the thermostat or ecosmart control. Note that some
thermostats have a delay (typically five minutes) before they will re-start cooling to prevent
compressor damage.
External pump does not run
In areas where hard water is present the pump may stick and fail to run. Often, closing the
isolation valve on the return leg and opening the drain port so that water flows through the
pump can free this. If this fails to free the pump, removal for cleaning or replacement is
necessary. The daily pump exerciser will help prevent pump sticking.
External pump is noisy at start-up
If sound has not diminished within 1 minute, air may be present in the system and may need re-
purging. If the heat source is a water heater, check to make sure branch connections for the
heating loop are horizontal to prevent the collecting of air in the loop.
Water heater temperature and pressure relief valve is weeping
A check valve or back-flow preventer may have been installed in the system. Some form of
pressure relief may be required. Consult water heater manufacturer’s instructions. Options are:
Install expansion tank
Install pressure relief valve; locate outlet over laundry tub or floor drain
Summary of Contents for ES50LVS
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