Page text (OCR transcript)
4. SOLAR SENSOR
Check sensor voltage.
0.3 — 0.5V (In Daylight)
Double Vacuum Valve (DVV)
(DVV is located on heater unit)
INSPECTION OF DVV
CHECK VACUUM CIRCUIT CONTINUITY BY BLOWING AIR
(a) OFF state
All circuit should be closed.
(b) Apply 12 volts to the positive (+) terminal and ground terminal T1.
There should be continuity between B and C at this time.
(c) Apply 12 volts to the positive (+) terminal and ground terminal T1. There should be continuity between A and B at this time.
If a problem is found, replace the DVV.
Water Temperature Switch
INSPECTION OF WATER TEMPERATURE SWITCH
CHECK WATER TEMPERATURE SWITCH OPERATION
(a) Disconnect the 1-pole connector from the water temp. switch.
(b) Check continuity between the water temp. switch and ground as follows.
Coolant temp. A B
Less than 30°C (86°F) CONTINUITY CONTINUITY
From 30°C (86°F) to
50°C (122°F) NO CONTINUITY NO CONTINUITY
More than 50°C (122°F) NO CONTINUITY NO CONTINUITY
If a problem is found, replace water valve.
WATER TEMP. SWITCH A
(30°C) SWITCH B
(50°C)