User Guide

10
Installation, Operation & Maintenance VMH 30/36 SERIES Heat Controller, Inc.
TEST OPERATION
5
Perform a test run after completing the leak check:
Check that all tubing and wiring have been properly connected.
Check that the gas and liquid side service valves are fully open.
1. Connect the power, press the ON/OFF button on the remote controller to turn the unit on.
2. Use the MODE button to select COOL, HEAT, AUTO and FAN to check if all the functions work
properly.
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3. When the ambient temperature is lower than 62 17 C), the unit cannot be controlled by the
remote controller to run in cooling mode, manual operation needs to be used.
Hold the panel sides and lift the panel up to a
n angle until it remains fixed with a clicking sound.
Press the Manual control button to select the AUTO or COOL, the unit will operate under Forced
AUTO or COOL mode(see User Manual for details).
4. The manual test operation should last about 30 minutes, giving the installing contractor an
opportunity to check that the unit is operating properly and the installation was done successfully.
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4. Test running
3. Safety and leakage check
A: Lo pressure valve B: Hi pressure valve
C and D are ends of indoor unit connection.
CAUTION NOTE:
Use soapy water or a leakage detector to check for leaks as follows:
1. Soap water method:
Apply a soap solution water or a liquid neutral detergent onto the
indoor unit connections and outdoor unit connections with a
soft brush to check for leaks in the connections of the piping.
If bubbles room, it indicates that the pipes have leaks.
2. Leak detector
Use the leak detector per the manufacturer’s instructions
to check for leakage.
Indoor unit
check point
D
B
C
A
Outdoor unit
check point
Cover
Manual control
Button
AUTO/COOL
OUTDOOR SECTION