Service Manual

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No. Problem Factor Corrective action
6 Even though the function
settings (No. 36, 37 and/
or 39) of PZ-62DR-EA are
set to “1”, “LO” or “HI” is
displayed on the remote
controller.
The indoor, outdoor, and/or
supply air temperature are out-
side the display range.
• Outdoor temperature display range: 35.6°F
(2°C) to 96.8°F (36°C)
• Indoor temperature display range: 48.2°F
(9°C) to 98.6 °F (37°C)
• Calculated supply air temperature display
range: 48.2°F (9°C) to 98.6 °F (37°C)
If the temperature exceeds the display range,
“HI” will be displayed, and if less than the dis-
play range, “LO” will be displayed.
7
CO2 concentration is not
displayed on PZ-62DR-EA.
With the function setting No.
38, CO2 concentration indica-
tion setting is set to “0: N/A”.
Set the function setting No. 38 to “1:
Available on the screen of PZ-62DR-EA”.
(See the PZ-62DR-E Installation manual and
the Lossnay Installation Instructions.)
The detected CO
2 concen-
tration is outside the display
range.
Detectable CO2 concentration range:
300 to 2000 ppm
If the concentration exceeds 2000 ppm,
“2000” will be displayed, and if less than 400
ppm, “LO” will be displayed.
The CO
2 sensor is in warm-up
operation. (For 15 minutes after
power is supplied to the CO2
sensor)
PZ-62DR-EA does not display CO2 concen-
tration while the CO2 sensor is in warm-up
operation.
(It displays “--- ppm” during warm-up
operation.)