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3.2.2 Control Not Communicating with Power Center PCB
The following conditions indicate that the control is not communicating with the power center PCB:
1. All Button Control: All the circuit LEDs are illuminated and the display is locked on a part number and revision
letter.
2. OneTouch Control: The screen is covered with dots and displays a fi rmware version number.
Communication problems can be caused by the following:
1. Broken communication wire(s). These wires are connected to the red terminal bar at terminals two (2) and three
(3 ) (yellow and black). See Figure 7.
2. The microprocessor was hit by a power surge. Turn off all power to the system. (If the PCB is prior to Revision N,
disconnect the nine (9) volt battery.) Wait two (2) minutes and then turn the power on. If this frees up the system,
you will need to reset the time and date, except with a Revision N board. Programming will not be lost. It is
advisable to install a Surge Protection Kit.
Figure 7. Checking Communication Problems between Control and Power Center PCB
S1
S2
654321
10987654321
4321
4321
RESET
SERVICE
TIME OUT
FIL
TER PUMP
A
UX 1
AUX 2
AUX
3
AUX
4
AUX 5
AUX 6
AUX
7
RS6 & RS8 ONLY
RS8 ONLY
HEATER
SOLAR
POOL MODE
SPA MODE
SPA DRAIN
SPA FILL
AUTO
Check for broken
yellow or black wires.
Check for broken
yellow or black wires.
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