Specifications

For system applications where the zone design heating load
is handled by the central heating equipment, zone supple-
mental heat can be sized to offset the transmission losses on
the perimeter during low temperature outside air conditions.
When Supplemental Heat Callers in set to ON, zone con-
trollers coordinate operation of supplemental and central heat
sources to maintain zone occupied set points and eliminate
zone over-conditioning caused by unnecessary operation of
supplemental heat.
NOTE: If the Supplemental Heat Damper position is not set
to 0 (configuration at the zone controller), the monitor ther-
mostat energizes the supply air fan when a zone controller
associated with the system energizes a supplemental heat re-
lay (only if sufficient airflow is not present). If the zone con-
troller requires system air, the monitor thermostat will turn
on the fan.
METERING
The monitor thermostat has zone metering capabilities. The
available functions allow the monitor thermostat to meter
zone usage in three ways:
• usage of the heating/cooling equipment to maintain zone
temperature conditions (amount of time the zone demand
matches the system mode).
• usage of the zone in addition to the normal occupied sched-
ule (amount of time the zone is in Unoccupied Override).
• amount of time zone demand matches system mode dur-
ing the unoccupied override.
HVAC Usage Meter — The monitor thermostat has a
usage meter that can accumulate up to 32,767 minutes (about
22 days) of HVAC usage. Through communication, the amount
of time accumulated in the meter can be accessed, recorded,
and reset to zero. Once the maximum amount of time has
been accumulated, the monitor thermostat stops metering and
a Meter Full Error is generated.
To configure the HVAC Usage Meter option, set category 7,
option 6. Use the left set point buttons to configure the op-
tion ON or OFF. The default is OFF.
To disable the HVAC Usage Meter, set the option to OFF.
No metering occurs.
Override Usage Meter — The monitor thermostat has
a usage meter that can accumulate up to 32,767 minutes (about
22 days) of override usage. When the Override Usage Meter
option is set to ON, the meter will record the minutes the
zone is in unoccupied override mode. When the Override
Usage Meter option is set to OFF, zone metering for this
mode will not occur.
To configure the Override Usage Meter option, set cat-
egory 7, option 7. Use the left set point buttons to configure
the option ON or OFF. The default is OFF.
To disable the Override Usage Meter, set the option to
OFF. No metering occurs.
HVAC Override Usage Meter — The monitor
thermostat has a usage meter that can accumulate up to
32,767 minutes (about 22 days) of HVAC override usage.
When the HVAC Override Usage Meter option is set to ON,
the meter will record the minutes the zone demand matches
the system mode in unoccupied override mode. When the
HVAC Override Usage Meter option is set to OFF, zone
metering for this mode will not occur.
To configure the HVAC Override Usage Meter option, set
category 7, option 8. Use the left set point buttons to con-
figure the option ON or OFF. The default is OFF.
To disable the HVAC Override Usage Meter, set the op-
tion to OFF. No metering occurs.
DIAGNOSTICS
The monitor thermostat has diagnostic capabilities for com-
ponents, and zone and system information.
Diagnostic problems, called errors or alarms, are divided
into 3 categories: Hardware Failure (HF) errors, Storage Fail-
ure (SF) errors, and System Errors (SE). The monitor ther-
mostat tracks the operating conditions in the zone.
Error Code Display — An error code representing the
Monitor HF, SE and SF diagnostic functions can be dis-
played to indicate which error has been declared. The 2 let-
ters located in the right of the display represent the type of
error. The 3 numbers located in the left of the display iden-
tify the specific error.
When the Error Code Display option is ON, an error code
will be displayed when the associated error occurs. Any
previous error codes that occurred when the Error Code
Display was configured OFF will be displayed.
NOTE: When an error is cleared, any errors remaining in the
thermostat will be displayed sequentially until all errors are
cleared.
When the Error Code Display option is set to OFF, no
error codes will be displayed by the monitor thermostat.
To configure the Error Code Display option, set category 7,
option 1. Use the left set point buttons to toggle the setting
to ON or OFF. The default is OFF.
System Errors (SE) — System Errors are listed in
Table 3.
Table 3 — System Errors
ERROR CODE SYSTEM ERROR DESCRIPTION ALARM PRIORITY LEVEL
SE01 Comfort Trend (Space Temperature Alarm) 2
SE02 HVAC Usage Meter Full 4
SE03 Override Usage Meter Full 4
SE04 HVAC Override Usage Meter Full 4
SE05 Communication Error 2
SE06 Cannot Detect Indoor Fan ON 2
SE07 Heat Mode Error (Discharge Air Temperature) 2
SE08 Cool Mode Error (Discharge Air Temperature) 2
SE09 Dirty Filter Error 4
SE10 Indoor Air Quality 2
SE11 High/Low Temperature Limit Exceeded 2
SE12 Cannot Detect Indoor Fan OFF 2
SE13 Stuck Gas Valve 1
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