Installation Manual 5.1.2
41
Test Strip Heat:
This set point, when on, will open all dampers, start the
blower at Fan maximum speed, and start the strip heat.
The rest of the parameters shown are for read only
purposes. They include: Time remaining in test mode
(in minutes), Compressor drive HZ, Blower CFM
requested, and compressor drive RPM.
When in test mode - Pumps are turned on as follows:
Ground loop pump – Comes on as soon as test mode is
initiated.
DHW pump – Comes on if in test mode and the DHW
temp sensor is reading a temperature lower than the
DHW Start set point.
AHW pump - Comes on if in test mode and the AHW
temp sensor is reading a temperature lower than the
AHW Start set point and the DHW pump is not running.
*Note: If both DHW and AHW sensors are below start
set point the DHW must be satisfied or unwired to start
the AHW pump.
11.6.0 Faults / Lock outs
Some System faults such as the low refrigerant pressure
switch or the high refrigerant pressure switch will be
allowed to trip a few times (default = 3) within 24 hours.
Then for system safety the compressor will lockout for
24 hours or until the condition causing the fault is
repaired and reset. Once the condition causing the
fault is repaired the lockout can be reset by cycling the
master switch or
cycling the system
power. Never
reset a lockout
without repairing the
issue that caused the
fault.
11.6.1 System Faults
Some examples of
system faults as they
will be displayed on
the Protostar are
listed here. Most are
self-explanatory.
These we will explain:
Sensor Failure: Either the supply air sensor or freeze
sensor has failed or is missing.
Enable off: Enable looks at the master switch and the
sensor fail check routine, if both are ok then a 3 minute
delay will count down. After this delay the enable will
go away. The enable will always be off during the
power up routine for 3 minutes.
Temp Fault: The temp fault routine looks at the return
air temperature and the supply air temperature to see if
the system is working correctly. If the system has been
running for 1 hour and the air differential is less than 8
degree the Temp Fault will be initiated.
11.6.2 Compressor Drive Faults
Compressor drive faults will be displayed on the
Protostar thermostat and indicated by a flashing light
directly on the v-star drive. Some examples of Drive
Faults as they will display on the Protostar are listed
here. Some like fault 3 & fault 6 will never apply to the
V-Star system so no description is provided.
The two most common
are Manual HI limit trip
and Comm loss.
A manual reset high
refrigerant limit is wired
directly to the V-star drive
for safety, this is the only
thing that will cause a
Manual HI limit fault.
Comm loss is normally a
temporary fault caused by
power flash or brownout.
This fault normally goes
away after power has
been restored for a few
minutes.
Examples of System Faults
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