•5VDC CB K7 Connector: See Figs. 3, 4, 5, and 6.
•Water Dispense Switch/Water Dispense Sensor
f. Push Button Model–"WTRDP" LED is on: Before engaging the water dispense switch, check for the correct VDC from the locations given in the "Disengaged" column in the table below. If the VDC is different than in the table, replace CB. If the VDC is correct, engage the water dispense switch. "WTRDP" LED turns on. If not, confirm that the water dispense signal VDC matches the "Engaged" column in the table below. If not, check the water dispense switch continuity when engaged (closed). If the water dispense switch is open when engaged, replace the water dispense switch. If the VDC matches the "Engaged" column below and the "WTRDP" LED does not turn on, replace CB.
5VDC CB K7 Connector
Component | Pin # (Wire Color) | To | CB VDC Ground | Disengaged | Engaged |
5VDC Power Supply | #3 (BR) | To | Red K4 pin closest | 5VDC | 5VDC |
Water Dispense Signal | #8 (DBU) | to black K3 | 0VDC | 5VDC |
Red positive test lead to red K4 connector pin closest
to black K3 connector
Black Negative
Test Lead
Control Board K7 Connector
Water Dispense (DBU) | Water Dispense (BR) |
(switch signal) | (5VDC power supply) |
Fig. 3
