Specifications

CRITICAL COMPONENTS TESTS
A) Water Inlet Valve Test
Check hot water side, going to tank: 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 line cord to the terminals. Plug
it into electrical outlet. If water flows in and stops 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 water does not flow in when the
cord is plugged into an electrical outlet, the Solenoid coil may be damaged,
opened, or the valve may have an obstruction preventing the water from
flowing in. Clean or replace it.
Check cold water side, going to dilution nozzle: Turn power off. If water
keeps coming out of the dilution nozzle, the solenoid might be clogged or
damaged. Check Valve should be provided and installed by the customer 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.
B) 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.
C) 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 or 220 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
Board is not working properly.
2. Make sure all wire connections to the Board are tight.
3. The grounding plate at the top, in the back of the board should be securely
Grounded.
The Board will not work or will work erratically,
if it is not grounded properly. If after this, the Board is still failing to
open the Water Inlet Valve, replace it.
BACKFLOW PREVENTION
CHECK VALVE
PROVIDED AND INSTALLED
BY CUSTOMER
DUAL WATER INLET VALVE
K491B
CD241 (115V)
CD244 (220V)
TO PROBE
K402Q
SINGLE PROBE
GROUNDING PLATE IN
BACK OF THE BOARD
GROUND
TERMINAL
TO
SOLENOID
L1
N
1
2
3
4
T5
SINGLE PROBE LIQUID
LEVEL CONTROLLER
L566A (115 V)
L599A (220V)