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"AIR" IN HOT WATER FAUCETS
Explosion Hazard
• Flammable hydrogen
gases may be present.
• Keep all ignition sources
away from faucet when
turning on hot water.
HYDROGEN GAS: Hydrogen gas can be produced in a hot
water system that has not been used for a long period of time
(generally two weeks or more). Hydrogen gas is extremely
flammable and explosive. To prevent the possibility of injury
under these conditions, we recommend the hot water faucet
be opened for several minutes at the kitchen sink before any
electrical appliances which are connected to the hot water
system are used (such as a dishwasher or washing machine).
If hydrogen gas is present, there wilt probably be an unusual
sound similar to air escaping through the pipe as the hot water
faucet is opened. There must be no smoking or open flame near
the faucet at the time it is open.
RUMBLING NOISE
In some water areas, scale or mineral deposits wilt build up on
your heating elements. This buildup wilt cause a rumbling noise.
Follow Element Removal/Replacement instructions to clean and
replace the elements.
HIGH TEMPERATURE SHUT OFF SYSTEM
This water heater is designed to automatically shut-off in the
event that the water temperature exceeds 190°F or 87.8°C.
A temperature limit switch or ECO (Energy Cut Off) is used
to shut off the power to the system if the water temperature
exceeds 190°F or 87.8°C (See "Water Temperature Regulation"
section). To reset the ECO disconnect power at the circuit
breaker/fuse box then remove the upper access panel. Reset
the ECO by firmly pushing inthe red reset button located on the
ECO block. If the ECO continues to shut-off the water heater
contact a qualified person for service.
If a fault is detected by the system, an error message wilt be System temperature parameters are available on the
displayed on the MAIN screen indicating the general nature
of the fault. More detailed fault information can be obtained
by viewing the MAINTENANCE screen. The MAINTENANCE
screen is accessed by simultaneously actuating the UP and
DOWN arrows on the user interface touch pad for 3 seconds.
(Note: engaging the child lock feature will not prevent access
to the MAINTENANCE screen, but wilt prevent inadvertent
changing of the set point temperature.) Once the screen
changes to MAINTENANCE, use the up arrow to scroll to
the error messages. There are six (6) system temperature
messages display in succession, followed by four (4) stored
fault messages. Fault messages are stored newest to oldest
and are labeled EO1 - EO4. Utilize the DIAGNOSTIC CODES
table for explanation of what each fault message means and
corrective action steps for each."
MAINTENANCE screen to aid in assessing the operation of the
heat pump. Access the MAINTENANCE screen as described in
the preceding paragraph. Scroll through the parameters using
the UP and DOWN arrows. The six (6) system temperatures
are listed in the following order:
• AMBIENT TEMPERATURE
• TANK TEMPERATURE (average)
• UPPER TANK TEMPERATURE
• LOWER TANK TEMPERATURE
• DISCHARGE TEMPERATURE (compressor discharge)
• COIL TEMPERATURE (evaporator coil outlet)
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