TEST
A) Water Inlet Valve Test | Check Valve |
Turn power off. If the water level rises inside the tank, the Water Inlet Valve | |
is leaking. Disconnect wires from the Water Inlet Valve coil and connect a 2 wire | Ass’y L463A |
line cord to the terminals. Plug it into a 115V outlet. If water flows in and stops | Hose Nut Ass’y K491A |
when you pull it out, the Valve is working fine. Repeat this test a few times. The | |
problem may be in the Probe or Water Level Control Board. If the water does | K491B was K178A |
not flow in when the cord is plugged into an electrical outlet, the Solenoid coil |
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may be damaged, opened or the valve may have an obstruction preventing the |
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water from flowing in. Clean or replace it. |
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A Check Valve is installed to prevent backflow.
To check proper function of Check Valve, disconnect water line from the Check Valve, check for dripping from the disconnected end of the Check Valve.
If it leaks replace it.
Water Inlet Valve [.5gpm] CD257 110V CD258 220V
[was L462A]
B)Hi-Level Float Switch Test
The Float Switch acts as a guardian for the Solid State Level Control Board
and its Probe. If they malfunction and cause the water inside the tank to rise, the Float Switch will prevent flooding by terminating the power to the Solid State Control Board and the Water Inlet Valve. The correct mounting position of the Float Switch in the tank is as shown in picture, with the magnets in the Float Switch in the upper part of the switch.
Float Switch L499A [70VA]
After tank is full, unplug the wire to the Level Control Probe,
the water should run into the tank for a few more seconds until it reaches the Float Switch and it should stop. If not, and water starts coming out of the Breather tube, the Float Switch is malfunctioning.
C)Probe Test
If lack of water persists, check the probe as follows:
Turn on the power and water supply. Check inside the tank to make sure the water is not touching the Probe. Pull wire and terminal out of the Probe rod. If water still does not flow after the wire is disconnected from the Probe, the problem may be in the Solid State Water Level Control Board.
If water starts flowing into the tank, the Probe may be grounded, due to excessive liming. Check with Ohm meter. Clean or replace probe.
D)Solid State Water Level Control Board Test
Check the Board as follows:
1.Make sure there is power input to the Board at the terminals 2 & 3 Your voltmeter should read 115 Volts. It should read the same at terminals 1 & 3. This is the output power to electrify the coil of the Solenoid Valve to open it.
The lack of voltage at terminals 2 & 4 will indicate that the | Grounding | ||
Board is not working properly. | Plate in | ||
2. | Make sure all wire connections to the Board are tight. | Back of Board | |
3. | The grounding plate at the top, in the back of the board | ||
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should be securely grounded. The Board will not work or will | Ground | ||
work erratically, if it is not grounded properly. If after this, the | |||
terminal | |||
Board is still failing to open the Water Inlet Valve, replace it. | |||
Correct Position
of Magnets
Level Control Probe
K402Q
To Solenoid
To Probe | N | L1 |
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4 3 2 1
T5
Water Level Control Board
7
