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TROUBLESHOOTING
Servicing should only be performed by a Qualified Service Agent
66
Control System Unresponsive (cont)
DISPLAYED MESSAGE
CONDITION/INDICATES
CHECK/REPAIR
UIM is Inoperable
UIM does not respond to any user input using the
operational and/or Up and Down buttons.
• Ensure Ribbon Cable from the Button overlay is
inserted correctly in UIM J3 Socket (page 47).
• Call the technical support phone number on the
back cover of this manual for further assistance
if the problem has not been corrected after per-
forming the procedure outlined here.
Heating Cycle Disabled
Control System not activating call
for heat with cold tank of water.
Thermometer Icon on Desktop
Screen appears with diagonal line
as shown here.
Possible Causes:
Fault condition active
Enable/disable circuit(s) open
• Check for and correct any active Fault condition
- see Current Fault Menu page 62.
• Check enable/disable circuits - ensure both cir-
cuits are closed; follow procedure outlined on
page 45.
• Call the technical support phone number on the
back cover of this manual for further assistance
if the problem has not been corrected after per-
forming the procedure outlined here.