TANKLESS CE 12 KW, Информационное руководство

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800 826 5537 03/24/2017
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Trouble shooting for electricians
CE and CES Series troubleshooting. Be sure you are a qualified electrician before proceeding.
This series of units operates off a flow meter and computer board that turn the units elements on and off. The thermostats in
this unit are solely a safety feature to shut the unit down in case of failure. Depending on how you are using your unit the
thermostats could be 90 F or 200 F. These thermostats determine the MAXIMUM temperature inside the unit before they
break the circuit.
1. Run fluid thru the unit and be sure any air is out of the unit.
2. Turn the unit on and watch the computer board.
3. If the computer board lights up and goes thru its diagnostic routine and shows your temperature setting when it is
finished then the following parts are working properly..computer board..#6 in the picture below and pressure switch
#9 in the picture below. If you have water pressure of over 3 PSI and the board does not light up then check the
pressure switch for continuity across the two spade terminals with wire connections on them. If it has continuity and
the board does not light up then you must replace the board. If it does not have continuity then you must replace the
pressure switch.
PROBLEMS THAT CAN OCCUR
No heating of any water
Solution
1.
Verify that the computer board is on and reading the current temperature. If not then check the water
pressure and power in for a bad connection or not enough pressure.
2. Take the pressure switch out of the equation by connecting temporaily the in and out to the pressure switch.
If the unit comes on when you do this the pressure switch is the problem.
3. Verify there is no blockage in the water stream as mentioned in 3 above.
4. If the board does not come on then it is possible the board has failed. Call 800 826 5537 for a new one.
Insufficient heating
1 A common problem with this unit at initial start up is a restricted flowmeter….see #2 in the picture below. This
part is a vortex meter that measures the fluid thru it. If there is any restriction the flexible tube will have to be
removed to enable a cleaning of the flow meter.
2 If the unit is heating but not producing what you need check to see if the board is flashing. If yes, it is telling you it
is being asked to do more than it can. Back off the flow level till the board quits flashing. Then test the water
output and compare it to the set point. If the output temperature is still lower than expected you probably have a
bad element or a blown fuse. You will need to check continuity on all elements and fuses to determine which