SolaSmart Plus™ User Guide
Version 2.0 – September 2013 Page 7
TROUBLE SHOOTING GUIDE
Before you call for repair or servicing check the following table
Also note down any observations at the time of the fault, especially the 3 sensor temperature
readings (on the display) and if possible what the Status screen was displaying.
Symptom Possible Cause Solution
No operation, no
lights ON
No power/fault
Check mains outlet is switched on
Sensor O.K. light OFF
Roof sensor not detected
Possible broken sensor cable
Check sensor is plugged in at
controller
Call for repair
Sensor O.K. light
flashing
Inlet or Tank sensor not detected Call for repair
Pump not running,
while sunny outside.
Pump light ON
Pump damaged or disconnected.
Pump timer has turned pump off
Controller fault
See if pump has become unplugged
Wait one minute for the pump to
restart.
Call for repair
Pump not running,
while sunny outside.
Pump light OFF
System in Topout
Check diagnostics display if controller
is in Topout, the first digit will be τ if in
Topout. If so then this is normal.
Pump is running
continuously
Pump is cavitating
Special Installation
Airlock in pipe
If pump sounds like stones are
passing through it, the pump may be
cavitating and so not moving water.
Call for repair
Long pump times may be normal for a
variable speed pump or a special
installation.
Pump only comes ON
when Roof sensor is
above 100ºC
Advanced Topout method
Normal operation for Advanced
Topout.
Pump only comes ON
for few seconds every
few minutes
T2 Advanced Topout and recovery
method in action
Normal operation for Advanced
Topout and Recovery. This prevents
banging in tank (steam implosions)
HWC light stays on
too long (more than 6
hours)
HWC power not getting to element
Element open circuit (blown)
Excess water draw off or leak
Read tank temperature
If < 50ºC issue will be interrupted
power or a faulty element. Call for
repair
If > 50ºC issue will be tank thermostat
will not allow controller to reach target
temperature (usually in BioSafe
heating). Arrange for tank thermostat
to be adjusted to maximum by
qualified personnel only
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