SolaStat™-2-3 User Guide
Version 1.11 – November 2011
Page 9
U
SING YOUR
S
OLA
S
TAT
™,
C
ONTINUED
Lockout Mode
The Lockout Mode is activated when the water temperature in the collector is
less than 20°C/68°
F
. In this case, the collector will not contribute any useful
heat, even to cold water.
In this (Lockout) mode, the controller will not turn on the pump even if the
correct temperature differential is reached.
However, if a frost condition is detected, this Lockout Mode is overridden and
the pump operates to protect the system from freezing.
Frost Mode
The
FROST
value is set by your installer. It is shown in the Programming
Table on Page 11.
This function is designed to protect your collector and hot water system from
freezing and bursting.
When the
FROST
temperature is reached, the pump will come on just
enough to raise the temperature of water by 2-3°C/4-6ºF.
Only a small amount of warm water is needed to protect the collector and
plumbing.
When the unit is in Frost Mode, the
FROST
and
PUMP
lights will come on.
CAUTION
: Do not turn the power off when the
FROST
light is on.
As soon as the collector reaches the
FROST
temperature, the
FROST
and
PUMP
lights will turn on.