"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 a fault is detected by the system, an error message wilt be
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."
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
the ECO by firmly pushing in the red reset button located on the ECO block. If the ECO continues to
contact a qualified person for service.
System temperature parameters are available on the 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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