FORM QWC3-NM1
ISSUE DATE: 11/20/2020
SECTION 7 – UNIT CONTROLS
QUANTECH
142
H O T G A S B Y P A S S T Y P E
B O T H S Y S T E M S
When programmed for hot gas bypass type Both Sys-
tems, the condensing units operating in suction pres-
sure control operate independent of the lead/lag sys-
tem.
Option 22 – Heatpump Unit
The heatpump display will appear if the heatpump
mode is enabled under the Service Mode.
H E A T P U M P U N I T
Option 23 – Flash Card Data Logging
When the following message appears, data logging is
disabled.
D A T A L O G T O F L A S H C A R D
O F F
When the following message appears, data logging is
enabled.
D A T A L O G T O F L A S H C A R D
O N
When the following message appears, data logging is
enabled and is not logging unchanged data.
D A T A L O G T O F L A S H C A R D
S K I P U N C H A N G E D
Option 24 – Temperature Sensors Enable
D S C H T E M P S E N S O R S
E N A B L E D
When the following option is selected, the discharge
temperature sensors are enabled for non-YCWL units
and disabled on YCWL leaving liquid and return liquid
hot temperature sensors.
Y C W L T E M P S E N S O R S
E N A B L E D
When the following option is selected, the discharge
temperature sensors are disabled.
D S C H T E M P S E N S O R S
D I S A B L E D
Option 25 – Variable Water Outlet Mode
When the following option is selected, the variable wa-
ter outlet mode is enabled.
V A R I A B L E O U T L E T M O D E
E N A B L E D
When the following option is selected, the variable wa-
ter outlet mode is disabled.
V A R I A B L E O U T L E T M O D E
D I S A B L E D
Clock
The CLOCK display shows the current day, time, and
date. Pressing the CLOCK key will show the current
day, time, and date.
It is important that the date and time be correct, other-
wise the Daily Schedule will not function as desired if
programmed. In addition, for ease of troubleshooting
via the History printouts, the day, time, and date should
be correct.
To change the day, time, and date press the CLOCK
key. The display will show something similar to the fol-
lowing:
T O D A Y I S F R I 0 8 : 5 1 A M
2 5 J A N 0 2
The line under the F is the cursor. If the day is correct,
press the ENTER/ADV key. The cursor will move un-
der the 0 in 08 hours. If the day is incorrect, press the
↑ (UP) or ↓ (DOWN) arrow keys until the desired day
is displayed and then press the ENTER/ADV key at
which time the day will be accepted and the cursor will
move under the first digit of the “2 digit hour”. In a
similar manner, the hour, minute, meridian, month, day,
and year may be programmed, whenever the cursor is
under the first letter/numeral of the item. Press the ↑
(UP) or ↓ (DOWN) arrow keys until the desired hour,
minute, meridian; day, month, and year are displayed.
Pressing the ENTER/ADV key will save the valve and
move the cursor on to the next programmable variable.
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