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TROUBLESHOOTING
TROUBLESHOOTING LCD CODES - NORMAL OPERATION
OPERATION
LCD DIGITS
CONTROL BOARD LED SEQUENCE
Power on sequence
Blank
Yellow LED permanently OFF
Green and red LED blink four times alternately
Standby
“ - -”
Yellow LED permanently OFF
Red LED permanently OFF
Green LED blinking slowly and continuously
Operation Safety Check
Desired flame level is shown
Yellow LED on at pressure threshold check
Green and red LED’s blink rapidly and alternately
Heat Request
Desired flame level is shown
Yellow LED permanently OFF
Red LED permanently OFF
Green LED blinking fast and continuously
Run
Desired flame level is shown
Red LED permanently OFF
Green LED permanently ON
TROUBLESHOOTING LCD FAULT CODES ON THE DISPLAY PANEL
FAULT
DESCRIPTION
LCD
Digits
Description
ACTION
Anomaly such as parasitic
flame, APT failure,
or APS failure
Desired
flame level
is shown
Yellow LED permanently OFF
Turn off main electrical power to
the wall furnace for 30 seconds then
retry ignition.
Green and red LED blink slowly and simultaneously
Ignition lock-out
“A1”
Yellow LED permanently OFF
Check gas presence.
Check flame detection probe.
Check ignition probe.
Red LED permanently ON
Green LED performs one blink followed by a one second pause
High water level fault
“A2”
Yellow LED permanently OFF
Check that the drain tube is not clogged
or crimped.
If equipped with the optional pump ac-
cessory kit, check pump functionality.
If equipped with the optional Humidi-
fication Tray accessory kit, check that
the tray is level and functioning.
Red LED permanently ON
Green LED performs two blinks followed by a one second pause
Transducer fault
“A3”
Yellow LED permanently OFF
Check Air pressure sensor connection.
Check fan functionality.
Check for flue blockage.
Red LED permanently ON
Green LED performs two blinks followed by a one second pause
Pressure switch fault
“A4”
Yellow LED permanently OFF
Check transducer and pressure switch
connections
Check pressure switch device.
Check inducer functionality.
Check for flue blockage.
Red LED permanently ON
Green LED performs 4 blinks followed by a one second pause
Overheat lock-out
“A5”
Yellow LED permanently OFF
Check circulating air blower
functionality.
Check circulating air blower filter.
Red LED permanently ON
Green LED performs 5 blinks followed by a one second pause
Inadequate
Combustion Airflow
“A7”
Yellow LED permanently OFF
Check for flue restriction.
Red LED permanently ON
Green LED performs 7 blinks followed by a one second pause
Room temp too high
“A8”
Yellow LED permanently OFF
Check thermostat functionality.
Red LED permanently ON
Green LED performs 8 blinks followed by a one second pause
Room temp sensor failure
“A9”
Yellow LED permanently OFF
Check temperature sensor
connection.
Red LED permanently ON
Green LED performs 9 blinks followed by a one second pause
To reset the wall furnace, press the mode selection button on the display panel and hold for one second. Repeat until the wall furnace
cycles through the “OFF” setting once. If the error is no longer present, the wall furnace will operate normally. If the error is still present,
consult a qualified service technician.
Summary of Contents for PVS18N-3
Page 7: ...37873 0 0217 Page 7 OWNER S MANUAL AND OPERATION INSTRUCTIONS www empirezoneheat com...
Page 13: ...37873 0 0217 Page 13 INSTALLATION INSTRUCTIONS www empirezoneheat com...
Page 55: ...37873 0 0217 Page 7 GUIDE D UTILISATION ET INSTRUCTIONS D INSTALLATION www empirezoneheat com...
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