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 unit will not heat 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 outlet, 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. = .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
EFC-5500-4-S-10, EFC-6500-4-S-10
0.55
GPM
EFC-7500-4-S-10, EFC-8000-5-S-10,
EFC-8300-2-S-10
0.65
GPM
EFC-9000-5-S-10, EFC-9500-4-S-10,
EFC-10000-5-S-10 0.75 GPM
3
