EnerWorks Solar Water Heating Appliance
Installation Manual / Energy Kinetics Inc. - Page
44
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© 2011 EnerWorks Inc.
Table 10.2.1 – Thermistor resistance vs. temperature
10.3 Pump
Pump operates when cloudy or at night
:
1. Check to ensure thermistors are connected and working properly.
2. Difference in temperature between collectors at night and cold mains water may be adequate
for collecting energy, i.e., nighttime ambient outdoor air temperature may be more than 18°F
(10°C) hotter than mains ground water temperature – and pump will operate.
Pump is not operating
:
1. If LCD screen on Controller is blank, check power to Energy Station.
2. If “Err” shows on Controller, refer to Controller section of troubleshooting.
3. Solar storage tank may be fully charged and over-temperature control has shut down pump.
Check thermometer for temperature of water in solar storage tank. Open hot water tap for a
few minutes - this will cool storage tank and pump should come back on.
4. Thermostat of over-temperature control may have to be manually reset. Remove solar
storage tank upper element cover and push red reset button on thermostat.