4
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Third party components
Service manual
368
REYQ8~20+REMQ5U7Y1B
VRV IV+ Heat Recovery
ESIE18-15B – 2020.05
NOTICE
Make sure to use a recommended bubble test solution from your wholesaler. Do not
use soap water, which may cause cracking of flare nuts (soap water may contain salt,
which absorbs moisture that will freeze when the piping gets cold), and/or lead to
corrosion of flared joints (soap water may contain ammonia which causes a corrosive
effect between the brass flare nut and the copper flare).
Problem solved?
Any leaks found in the refrigerant
circuit?
Action
Yes
Replace the leaking part of the
refrigerant circuit, see
No
Return to the troubleshooting of the
specific error and continue with the
next procedure.
To check if the refrigerant field piping is conform with the regulations
1
Check if the refrigerant field piping is conform with the regulations. Adjust as
needed. See installation manual for field piping specifications.
Is the problem solved?
Action
Yes
No further actions required.
No
Return to the troubleshooting of the
specific error and continue with the
next procedure.
4.2.2 Repair procedures
To open the stop valves of the refrigerant circuit
Prerequisite:
Remove the required plate work, see
315].
1
Remove the caps.
b
c
a
a
Liquid stop valve
b
Suction gas stop valve
c
High pressure/low pressure gas stop valve
2
Completely open the stop valves by screwing the stop valve screw
counterclockwise.
Summary of Contents for VRV IV+
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