70
SunTouch
®
Control System Installation and User’s Guide
Problem Solving a Solar System
SunTouch
®
Control System solar is not operating
Verify the circuit breaker at sub-panel is not tripped. If the 3 AMP Circuit Breaker on the on the SunTouch
®
Control System is tripped, it is most often due to a defective Circuit Board or Valve Actuator. Try
disconnecting each one separately to determine which one is at fault.
Solar will only operate when the solar temperature is 6° warmer than the water temperature.
Inspect the appropriate sensor cable and wire connections and replace the appropriate temperature sensor if
necessary. An ohm meter can be used to take a reading of the sensors. See table on page 68.
If the temperature sensors are not at fault, replace the SunTouch Control System circuit board.
Water flow to panels switch does not operate the valve actuator
If the valve actuator does not operate when using the WATER FLOW TO PANELS Switch (sliding switch
between ON and OFF), either the valve actuator or the SunTouch circuit board is at fault.
First verify that the toggle switch located on the valve actuator is either in the ON1 or ON2 position.
With a voltmeter, check the output voltage of the VLV1 socket located on the SunTouch Control System
circuit board. When the WATER FLOW TO PANELS Switch is in the OFF position, the top and middle pins
should read 24 VAC. When the WATER FLOW TO PANELS switch is in the ON position, the top and bottom
pins should read
24 VAC.
If voltage readings are correct, replace the valve actuator. If voltage readings are incorrect, replace the
SunTouch Control System circuit board.
Checking The Temperature Sensors
Disconnect temperature Sensor wires from the SunTouch Control System circuit board, and test sensor using
an ohm meter. See table on page 66.
Testing the Solar System
To test the
SunTouch Control System
in “SOLAR ONLY” mode: Set the “System Control” menu setting to
“SOLAR ON” verify the valve(s) are in the solar position. Then set the menu setting to “SOLAR OFF”
and verify the valve is in the normal recirculating pool position. If the valve(s) positions are working in
reverse, toggle the valve switches and test again.
Air Sensor ERROR
If after enabling the optional air sensor (see page 24) the main screen displays
AIR Error
or
Solar
Sensor ERR
, this indicates the solar sensor is not connected or it is out of range. Check that the sensor
is connected correctly to connector J9 on the
SunTouch Control System
motherboard (see page 53).
