tekmar 538 Thermostat Installation - Manual (Page 22)

22 of 24 © 2011 D 538 - 12/11
Symptom Look for... Corrective Action
No Heat
H1 Symbol
H1 symbol indicates heat is on. Check if
zone valve or zone pump is operating.
Flashing
WWSD
Increase WWSD setting on tekmarNet ®
reset control.
Flashing Away Change User Switch to Normal scene 1.
Heat on before
scheduled time
Optimum start “learns” the heat up and
cool off rate of the room and starts the
heating or cooling early so that the room is
comfortable at the scheduled time.
Pressing
button does
not increase
temperature
Flashing Max
Installer can increase the Maximum Set
Room Heat.
Flashing Floor
Max
Floor temperature has reached the Floor
Maximum setting. If the floor is not heated,
then the floor sensor may be faulty and
require replacement.
Pressing
button does
not decrease
temperature
Flashing Min
Installer can decrease the Minimum Set
Room Heat.
Floor Min
Floor minimum takes priority over the air
heating temperature. Recommend turning
down the floor minimum temperature
setting.
Frequently Asked Questions