EX07200-121 Rev A
Manufacturer’s National Service Department | 400 Captain Neville Dr. Waterbury, CT 06705
Eemax® 800-543-6163 | EcoSmart® 877-474-6473 | Rheem® or Richmond® 800-374-8806
Information contained in this document is subject to change without notice.
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Two flashes once,
three second pause
Low heat
- outlet temperature below 90°F/32°C
for 5 seconds of flow
- element failure
- ECO tripped/malfunctioning
- relay/contactor malfunctioning
- control board failure
- inlet water supply out of spec
- unit keeps running,
LED flashes a warning
pattern
- reduce flow through
unit
Two flashes twice,
three second pause
Outlet thermistor failure
- outlet thermistor interrupted or
disconnected
- unit keeps running,
LED flashes a warning
pattern
- inspect
connections/wiring of
outlet thermistor
Two flashes three
times, three second
pause
Over-temperature
Warning
- outlet temperature exceeds
110°F/38°C
- unit keeps running,
LED flashes a warning
pattern
-increase flow through
unit. If this temperature
is desired no action is
required
Three flashes once,
three second pause
Over-temperature
Protection
- outlet temperature exceeds
150°F/65
°
C
- unit stops heating until
outlet temperature falls
below preset minimum
- increase flow through
unit to decrease the
overall temperature rise
Three flashes twice,
three second pause
Freeze warning
- inlet temperature is too low (below
35°F/2°C)
- heating disabled
- increase temperature of
inlet water to meet
product specifications
PERIODIC MAINTENANCE
The heater is designed for many years of carefree use. In order to maintain consistent water flow, it may be necessary to periodically
clean the faucet aerator or the filter screen located in the brass inlet fitting at the heater.
Element cartridge
installs inside heating chamber of all
heaters
FlowCo
LavAdvantage & Accumix II
Triacs
Contactor
Triacs
Heating chamber
Relay
Control board
Terminal block
Electrical cut-off
(ECO)
