tekmar 537 Thermostat Installation - Manual (Page 18)

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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 rate
of the room and starts the heating 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 limits.
Pressing
button does
not decrease
temperature
Flashing Min
Installer can decrease the Minimum Set
Room Heat limits.
Frequently Asked Questions