Replacement Solar Hot Water Controller to suit Solar Lord Solar Hot Water System (controller only - sensors not included)
HWC-2 Customer Information
INPUT 240 VAC 50Hz 10A 2400W - OUTPUT MAX LOAD 10A 2400W -IP33
Approval Certificate No.0060411
The HWC-2 is a Micro Processor driven Differential Controller that utilises highly accurate digital thermostats to maximise solar gain.
When the roof top collector reaches a predetermined temperature above the storage tank temperature power is supplied to a small low power circulating pump which in turn circulates the cooler tank water to the hotter roof and the hot roof water back to the storage tank.
If the roof top collector temperature is approaching freezing the small circulating pump will be switched on momentarily to circulate warmer water to the roof top collector protecting it from freezing.
Each Controller has a full range of built-in self-diagnosis and if an error occurs an alarm will sound on and off. Under normal operation L1 and L4 Red indicators will flash alternatively & if the circulating pump is on L1 and L4 will double flash alternatively.
If the alarm is heard, then check all wiring as per the installer instructions, if the alarm continues to sound then switch the unit off and call the Authorised Installer for service.
Please note#
Large power surges and lightning can cause damage to sensors and microprocessors. If by changing sensors the symptom continues there is likely damage to the main controller which will require replacement at the customer's expense, household insurance may cover this.