44(53)
2. Timing start/stop
Setup the timing set parameter in the user's parameter setup item list, time
set one time start/stop time; if it is working, then the unit will stop at that time;
if it is being stopped, then the unit will start at that time.
4.3.9 Maintenance
1. Compressor protection
1) 4 mins delay when the compressor is restarted (settable).
2) Stop related compressor when there is a compressor fault happens and
there also has a fault checking delay.
2. Ffault or default phase protection
1) If it is for module unit, stop the system when main module (first rear plate)
has fault or default phase protection; Stop related module when lower
module (from the second rear plate) has that protection.
2) If it is for non-module unit, stop the system when first rear plate has fault or
default phase protection; Stop related compressor when it is for the second
rear plate and its after plates to have that protection.
3. Other protection
1) Only can start the unit by pressing reset key when it has been stopped
emergently due to water flow and temperature probe faults.
2) Press "reset" key to reset when one compressor has fault, the compressor
will return to work after the fault has been fixed.
3) It is not allowed to change running mode (cooling or heating) when it is
working and also not allowed to initialize some parameters.
4.3.10 Password Manage
At least adopt 3-aspect management for system's password, as manufacturer
set password, machine set password
、
user set password, detailed privileges are
allocated as following
：
a) The manufacturer set password is usually possessed by air-conditioner
manufacturer which is the most high privilege code and can be used to enter
into any item of manufacturer settings, machine settings, user settings to
modify the setups.
b) The machine set password is usually possessed by debugging personnel and
