Fault Analysis - Lennox CWC 090-4P Installation, Operation & Maintenance Manual

OPTIONS
WATER CONTROL VALVE KIT (2 AND 3 WAYS, ON/OFF AND PROPORTIONAL)
Water control valve
(3 ways) proportional
Auxiliary drip tray
Connecting
flexible hose
Drain tube from
auxiliary drip tray
Drain tube from drip tray
AUXILIARY DRIP TRAY
• Install the auxiliary drip tray as shown in
the illustration.
• Connect the drain tube from drip tray to the
auxiliary drip tray.
• The condensate drains from auxiliary drip
tray will be pumped away.
NOTE: Proportional valves, must be connected to a proportional
flow regulation control

FAULT ANALYSIS

PROBLEM
1.- Unit not operating
2.- Indoor unit fans running
too fast without apparent
speed change
3.- Condensate overflowing
NOTE THE CORRECT POSITION OF THE
WATER CONTROL VALVE
Water connection
Auxiliary drip tray
Connect each valve ON/OFF to
its corresponding connector
(cooling connector and heating
Hot water control valve
(not included in optional kit)
ACTION
• Check power is available at unit.
• Check wiring.
• Check remote control is functioning and set properly ( if any).
• Check the indoor unit filter is clean.
• Check wiring
• If problem persists then motor may be faulty.
• Check drip tray for blockage, and condensate drains away.
• Check unit is level.
• Check condensate pump is working.
• Check service drain pipework.
Main cable
2 PIPE SYSTEM
CAUTION
conector
Main cable
Auxiliary drip tray
17
Water control valve
4 PIPE SYSTEM
Cool water control valve