IV–20
• 2-3
The air discharge hose must not be emitting large amounts of bubbles.
Air bleed cock on the tube leading from the engine outlet (between the wax valve.)
• 3-1
Resistance values of the coolant temperature sensor (see the chart on thermistor characteristics for further
details.)
40°C: 1.2kΩ 50°C: 879Ω 60°C: 642Ω 70°C: 477Ω
80°C: 361Ω 90°C: 227Ω 100°C: 216Ω
• 3-4
Check to make sure the exhaust heat collection valve is not locked closed by following the instructions
below.
1) Resume operations of the outdoor unit in the heater mode. (Either as a test run or with remote controller
operations.)
2) Once the outdoor unit is operating, measure the temperature of the exhaust heat collection valve’s
secondary duct for approximately two minutes. (see fi g. A19301.)
3) If it is clear that the temperature has not dropped in comparison with the situation before start-up, then
there is a chance that the valve is locked closed. Everything is normal if the temperature does not drop.
GHPtroubleshooting.indbIV‒20GHPtroubleshooting.indbIV‒20 2012/11/2611:20:072012/11/2611:20:07
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