C l i m a t e M a s t e r Wa t e r-S o u r c e H e a t i n g a n d C o o l i n g S y s t e m s
C L I M A T E M A S T E R W A T E R - S O U R C E H E A T P U M P S
C o n s o l e s
R e v. : 0 8 / 1 3 / 1 0
12
7. High Heat - Adjust the unit thermostat to the
warmest setting and turn the fan speed switch to
"HI". If the unit has an optional MCO thermostat,
set the selector switch to heat. The blower should
start immediately and after the time delay is
complete the compressor will start. Once the unit
has begun to run, check for warm air delivery at
the unit grille. Again the installing contractor must
list the serial number of any machine that does
not function. Log the unit operating conditions
at initial start-up for each unit to establish a
permanent operating record.
8. Low Heat - Disregard if unit is only one speed.
Select low fan. Airflow should decrease and
compressor should continue to operate.
9. Unit Cycles Off - Slowly turn thermostat toward
cooler position. Both fan and compressor should
shut off when thermostat set point equals room
temperature. Note room temperature must be
above 19°C or unit will not cycle off.
10. Fan Only - Select fan speed. Only fan should
operate.
11. Off - Unit should not operate
Troubleshooting
1.
If the unit fails to operate, conduct the following
checks:
a. Check the voltage and current. They should
comply with the electrical specifications
described on the unit nameplate.
b. Look for wiring errors. Check for loose terminal
screws where wire connections have been made
on both the line and low-voltage terminal boards.
c. Check for dirty filters. A clogged filter will cause
safety cutouts to stop unit operation.
d. Check the supply and return piping. They must
be properly connected to the inlet and outlet
connections on the unit.
e. If the fan fails to operate,check wiring and check
to see that the fan wheel turns freely and that it is
secured to the shaft. Also, determine whether the
fan operates during both the heating and cooling
modes.
f. Check if circuit board is flashing a fault code. See
CXM/DXM AOM for details.
g.
Check that the unit has not cycled off on
thermostat.
h. If the checks described above fail to reveal the
problem and the unit still will not operate,
contact a trained service technician to ensure
proper diagnosis and repair of the equipment.
2. Record any unit that does not operate correctly.
Use the form at the end of this manual.
Unit Start-Up / Heating
To Next Page
Loading...
