11
Manufactured for and on behalf of the Environmental and Combustion Controls Division of
Honeywell Technologies Sàrl, ACS-ECC EMEA, Z.A. La Pièce 16, 1180 Rolle, Switzerland by its
Authorised Representative Honeywell International Inc.
TROUBLESHOOTING THE CM707
Symptom
Remedy
Blank Display (Power Loss).
Check batteries are installed by removing the
battery cover.
Check batteries have been installed in the
correct orientation.
Replace the batteries.
Display shows flashing
symbol.
The batteries in the thermostat are low on
power - Replace the batteries.
Display shows
symbol.
A fault has occurred in your heating system.
Remove and re-insert the batteries.
If the
symbol does not clear after a few
minutes contact your installer.
Display shows the word
‘
SERVICE
’
Your installer has set a scheduled
maintenance alert period on your CM707 as
a recommendation that your heating system
should receive a routine inspection.
Call your installer to arrange a maintenance
visit.
Note:
The CM707 and heating system will
continue to operate as normal.
Troubleshooting Guide
