Marey GA30NG User Manual

16
Issue
Possible Cause
Solu�on
No power: Power
indicator lamp is not lit
Power outage
Unit requires 120V power. Use unit when
power is restored.
Check circuit breaker and reset if needed.
Check ground fault circuit interrupter (GFCI)
if circuit includes one and reset if necessary.
Unit is unplugged
Check power plug and ensure properly plugged.
Plug the power plug properly.
There is no hot water
ow when a hot water
faucet is opened.
No/empty fuel source
Water valve closed
Power outage
Flow is too low or became
too low. (less than 0.66
gallons per minute (gpm) or
2.5 liters per minute (l/m)
Freezing temperatures may
have frozen water in the
heater or hot water system.
Fuel gas meter special
control restricons
Distance from heater to
source is long
Fuel gas valve needs to be open
Rell source tank (if applicable)
Open the water inlet valve.
Unit requires 120V power to operate.
Flow is below the lower limit necessary for
stable burner operaon and proper
temperature control. Increase the hot water
ow to enable system.
See “No Flow Due to Expected Frozen
Heater” secon of this manual for procedure
to thaw unit.
Some fuel gas valves may have special
restricons or digit
al controls that use.
Consult your gas supplier and/or a service
professional for assistance.
Allow me for hot water to travel through
system to reach the point of use.
Issue
Possible Cause
Solu�on
Hot water is not the
right temperature
(too hot or too cold)
Temperature set point was
reset due to power outage.
Flow is beyond capacity
Incoming water is too warm
Power outage restores default sengs and
custom set points must be re-entered to unit
Desired water ow is above maximum
capacity of unit. Reduce user ows to re-
establish control of temperature
If incoming water to unit is very warm and
the ow is just above minimum
requirements, the heat generated by the
burner while operang at minimum capacity
can make the water hoer than desired.
Increase the hot water user ow so that the
burner system can control the temperature.
Hot water ow
produced is lower than
expected
Water source is restricted
Heat exchanger in unit is
scaled
Incoming water temperature
Check and fully open water inlet valve(s)
Check and clean inlet water screen
Clean heat exchanger by ushing per
maintenance procedure.
Colder than normal incoming supply water

Marey GA30NG Specifications

General

Brand	Marey
Model	GA30NG
Category	Water Heater
Language	English