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Page 5 / 6 PV500-40 01/25/11
2.2 HOW TO LOCK THE KEYBOARD
1. Push and hold the UP + DOWN keys for more than 3 seconds.
2. The “POF” message will be displayed and the keyboard is locked. At this point it
is only possible to view the set point.
3. Repeat step 1 to unlock the keyboard.
2.3 HOT KEY PROGRAMMING (FOR FACTORY SUPPORTED FIELD REPROGRAMMING)
To upload a program from a control to a HOT KEY:
To download a program from a HOT KEY to a control:
3. ALARMS
Alarm messages are displayed in the upper LED readout and alternate with the default display.
An alarm LED icon is also illuminated.
Message Cause Results of alarm condition
“P1” Probe 1 failure
-
Call for heat and burner second stage
interrupted; modulation output signal will
revert to low fire
“P2” Probe 2 failure
-
Freeze protection is disabled
“P3” Probe 3 failure
-
Outdoor reset disabled
-
Warm weather shut down disabled
“HA” High temperature limit set point exceeded
-
Buzzer sounds, operation continues
“LA” Low- temperature alarm
-
Buzzer sounds, operation continues
HP High gas pressure/low water cut-off alarm
-
Unit deenergized after time delay
LP Low gas pressure alarm
-
Unit deenergized after time delay
Mn1 Maintenance alert for call-for-heat
-
Buzzer sounds, operation continues
Mn2 Maintenance alert for second stage
-
Buzzer sounds, operation continues
Mn3 Maintenance alert for freeze protection
-
Buzzer sounds, operation continues
“rtc” The real time clock has lost the setting
-
Energy saving functions disabled
“rtF” Real time clock failure
-
Energy saving functions disabled
+
Insert HOT KEY into the TTL connection on the back of the control.
Press and hold UP + DOWN keys momentarily then press the UP key.
The “Upl” message will appear while uploading is occurring and the
“End” message will appear when finished. Push any key to return to
normal operation.
ON/OFF
Press the ON/OFF key to turn off the control. Insert the HOT KEY into the TTL connection on
the back of the control. Press the ON/OFF key again and downloading will begin. The “don”
message will appear while downloading is occurring and the “End” message will appear
when finished. Push any key to return to normal operation.