HTP EVR 040, Инструкция по использованию и уходу, Страница: 16 / 22

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Vacation (Extended Shut-Off Periods)
During extended mild or warm weather periods when hot water will not be in use, shut off the electric power to the tank. When hot water
is needed again, restore power to the water heater.
During extended cold weather periods when hot water will not be in use and prone to freezing conditions, shut off electric power to the
tank, close the supply line shut-off valve, open the drain valve and drain the water heater to a safe drainage location (as detailed
previously). Once drained, close the drain valve. When hot water is needed again, restore the water supply to the tank. Once the tank is
full, restore power.
The maintenance activities described below are only to be performed during service by the
Installer/Qualified Service Provider .
These maintenance items should be performed during recommended annual service and any service calls.
1. Ask the owner / user if there have been any issues with the water heater. Diagnose any heater issues and repair / replace parts as
necessary.
2. Check the water heater and related plumbing for leaks. Repair any that are found.
3. Check the area around the water heater for flammable liquids or combustible materials. If any are found, remove from the area.
4. Check the heating elements while the heater is in operation. If the elements are hissing / singing excessively, they may need to be
cleaned. Inspect the elements and clean if necessary.
5. Inspect the Temperature and Pressure (T&P) Relief Valve. See instructions below.
T&P Relief Valve Maintenance Instructions:

Annually: Certain naturally occurring mineral deposits may adhere to the valve, blocking waterways and rendering the valve
inoperative. The T&P Relief Valve lever must be operated to ensure the waterways are clear. If waterways are clear, hot water
will discharge from the valve. Take precautions to avoid personal injury and property damage from contact with hot water.
Before operating lever, check to see that a discharge line is connected to the valve, directing the flow of hot water from the
valve to a proper place of disposal.

Replacement of the valve is required if no water flows when the lever is operated. Turn the water heater off until the valve is
replaced.

If water flows from the relief valve, drain a few gallons from the tank to ensure water flows freely.

At least once every three years: To ensure that the T&P relief valve has not been affected by corrosive water conditions and
that the valve and discharge line have not been altered or tampered with illegally, relief valves should be inspected, and
replaced, if necessary, by a licensed plumbing contractor or qualified service technician.
FAILURE TO COMPLY WITH THE ABOVE GUIDELINES COULD RESULT IN FAILURE OF RELIEF VALVE OPERATION,
RESULTING IN POSSIBILITY OF SUBSTANTIAL PROPERTY DAMAGE, SEVERE PERSONAL INJURY, OR DEATH.
6. Turn power supply off to the water heater. Open the drain valve and drain a few gallons of water from the tank to clear the tank of
any hard water deposits. Once complete, close the drain valve and restore power to the water heater.
PART 8 – TROUBLESHOOTING
The following table details operating issues, possible causes, and service remedies.
ISSUE POSSIBLE CAUSE SERVICE REMEDIES
No Hot Water
1. Manual disconnect switch turned off
2. Improper Wiring
3. No Power
– blown fuse or circuit breaker tripped
a. Shorted wiring
b. Circuit overloaded
c. Improper wiring
d. Grounded element or thermostat
4. Manual Reset High Limit Switch (ECO) open
a. Thermostat(s) defective
b. Thermostat out of calibration
c. Heat build-up due to loose wires
d. Defective High Limit Switch (ECO)
1. Turn switch ON
2. *Rewire per Fig. 5, Wiring Detail
3. Replace fuse or reset breaker
a. *Replace or repair
b. *Provide adequate circuit to
reduce load
c. *Rewire per diagram
d. *Replace
4. Refer to Part 5, Sections A and B, this manual
a. *Replace thermostat
b. *Lower thermostat setting or replace
c. *Tighten wire connections
d. *Replace
Not enough Hot Water
1. Heater undersized
2. Defective Element(s)
3. Miswired or defective thermostat causing only
one element to work 1. Reduce rate of hot water use
2. *Check amperage, replace
element if low
3. *Check wiring or replace