RVP 6536 SERIES, Руководство по обслуживанию

Страница: 26 / 36

26
115 VAC To System #1
Also To T1 & T5 On P.C. Board
Restore Power
O
K
NO
12 VDC To Y1&B On Thermostat
(Remember Time Delays)
NO
Green L.E.D. Light
FY,F Circuit
Continuity
Check 12 VDC
To R&B On
Thermostat
O
K
Check All Pin Terminals
And Connectors To
Thermostat. Replace
Lifeline If Necessary.
12 VDC To Pin Connectors
Y&B On P.C. Board, Also T2
& T3A (See Figure 14).
NO
OK NO
Restore 12 VDC
O
K
Green L.E.D.
Light On
Replace Relay If 12
VDC Is Present And
Relay Will Not Close Or
If Relay If Welded.
Check Compressor #1
Relay Operation
NO
O
K
Reconnect Wires Or
Replace Components
As Necessary.
Check Compressor #1 Start
Device. Check For Proper
Wiring To Compressor. Check
Compressor Run Capacitor.
Check Motor Windings For Open
Or Ground.
O
K
NO
115 VAC To
System #1
Restore 115 VAC
NO
O
K
Freeze Sensor
Closed
NO
If Open, Refer To Freeze
Sensor Checkout
O
K
Check Pin Terminals And All
Connections From Thermostat To P.C.
Board. Check 12 VDC To R&B At P.C.
Board (See Figure 14).
O
K
Everything Above Checks Out,
Replace P.C. Board
COMPRESSOR #1 CHECKOUT
THERMOSTAT CALLING FOR COMPRESSOR
COOLING ONLY
Note: All operating functions subject to thermostat time delays.