Cooling Commissioning; Commissioning Flowchart; Outdoor Checking - Haier MRV II Instruction Manual

2. Cooling commissioning

2.1 Commissioning flowchart

confirm outdoor unit
if slave unit can start normally, for the first
15 minutes of master unit being electrified
for first time, its' highest frequency is 60HZ
for the first time being electrified,each slave
unit will run into oil equalization mode after
it accumulative total running for 30 minutes
if there is slave unit does not start when the master
unit frequency is higer than 95HZ,if yes, check if the
slave unit is giving the alarm, (flash times +70 is the
failure code in use manual) , resove the failure

2.2 Outdoor checking

if the master unit can not find all the indoor, it
can not start to run, electrify outdoor 12 hours
in advance before trial operation, all indoors
startup and run in cooling mode with high fan
speed, set temperature at 16 degrees
system confirmation
system runs stably, ( keep running at least an hour),
record the running data, see attached table 6
analyse the running data, see attached table 7
after the problem being resolved, set the indoor as cooling mode ( to
confirm if the expansion valve of stop running unit can close fully)
system runs stably, (accumulative total running at least an hour),
record the running data, see attached table 6, data analyse see
attaced table 7
Resolve the problems, system running confirmation,
cooling debugging is finished
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confirm indoor unit
check if there is air flow out from
the indoor air outlet, and if there
is abnormal voice
check if there is fault on indoor
unit, resolve the problem
according to the failure code
Part 2