High Voltage
Compartment
Low Voltage
Compartment
Ground Wires to
Printed Circuit Board
and Grounding Bar
Transformer Plug
to Printed
Circuit Board
OPTIONAL
Pool Cleaner
Relay
PCS1 POWER
Relay plugs into
PMPsocket on the
Circuit Board
Transformer
Power Wires (4)
1. Compool has a Limited Warranty on the LX220 and the product must be returned
directly to them for service or repair during this warranty period. See warranty on back of
2. The power-reset button protects the solar valve and control circuitry from electrical
overload situations. It is an internal circuit breaker. Check for short circuit conditions if breaker
consistently trips. Push to reset.
3. Always keep the cover to the LX220 closed to protect the electronic circuitry from
moisture and weather exposure.
4. To install the water sensor, drill a 5/16” hole in the selected location and insert the
sensor into the hole with “O” ring attached and facing pipe. Feed the sensor wires through hole in
the clamp and gently tighten clamp around pipe. Caution:Over tightening of clamp can cause
deformation of “O” ring seal. Run 22 gauge 2-conductor cable from the sensor to the low voltage
compartment of the LX220. Strip back insulation 1/4” and connect to WTRscrew terminals on
printed circuit board. Use the UY crimp connectors supplied by Compool to provide waterproof
connections between the sensor and the two-conductor cable.
5. If the “water or solar sensor service reqd” lights are on—this could mean a defective
sensor or loose wire(s) is/are present. An electrical ohmmeter should read resistance across the
sensor’s two leads. Typically 10K ohms at 68-70º F. As temperature increases, the resistance
decreases. A very hot attic may cause the sensor to only read 6K ohms [6000 ohms across the
6. If the “solar sensor service reqd” light is on—this could also mean that the float inside
the PCS1 has detected a condition of excess water in the base pan.
1-3
4-6
7-9
10-12
13-15
16-18
19-21
22-24
25-27
28-30
31-33
34-36
37-39
40-42
43-45
46-48
49-51
52-54
55-57
58-60
61-63
64-66
67-69
70-72
73-75
76-78
79-81
82-84
85-87
88-90
91-93
94-96
97-99
100-102
103-105
106-108
109-111
112-114
115-117
118-120
121
