The indicator light does not illuminate (When the hot water faucet is
fully opened):
STEP ONE:
Is the circuit breaker switched on at the main circuit breaker panel?
YES Go to Step two
NO
Run water at the hot water faucet, for a couple of
minutes, before turning on the circuit breaker.
Then turn on the circuit breaker at the main
circuit breaker panel.
STEP TWO:
The heating elements will not energize unless sufficient water is flowing through the
unit.
The minimum acceptable flow rate is 0.55 gallons per minute. Some
models require a higher flow rate, see chart below for specific
model flow
rates. Measure the flow rate using the following procedure:
Fill a 1-gallon “milk” container and, using only water from the hot water
faucet, record the time (In seconds) required to fill. To calculate the flow
rate, divide the number of gallons the container holds (In this case one
gallon) by the time required to fill.
e.g. If it takes 87 seconds to fill the container, then the flow rate would be:
Flow rate (gpm) = v/t x 60 = (1 gal./ 87 sec) x (60 sec./1 min.) = 0.69 gpm.
Open all water valves completely. If the indicator light still does not
illuminate then proceed to STEP THREE.
MODEL TYPE / ORDER REF# MINIMUM FLOW RATE
EFT-5500-4-S-10, EFT-6000-4-S-10 0.55 GPM
EFT-7500-4-S-10, EFT-8000-4-S-10,
EFT-8300-4-S-10 0.65 GPM
EFT-9000-4-S-10, EFT-9500-4-S-10,
EFT-10000-4-S-10 0.75 GPM
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