10-19-00 Air Conditioner Heat Pump Service Manual - Bryant RV ...

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Section B - Operation, cont’d.Analog Control Electric Heat Pump Operation - SeeFIG. B191. Set the Temperature Set Lever (1) to desired temperaturelevel.2. Set the System Switch (3) to heat pump position.3. Move the FAN Auto/On Switch (2):a. Auto Position: Unit fan runs whenever heat is requiredand stops whenever heating is not required.b. ON Position: Unit fan runs continuously to circulateair in RV.4. Select desired fan speed by moving the Fan SpeedSwitch (4) to:a. High Speed: Selected when maximum air flow isrequired. The discharge air will feel cool due to themaximum air flow. It is normally not used for heatpump operation.b. Low Speed: Normally selected for heat pump operation,because less air movement is needed forheat and discharge air is warmer.B2. Heat PumpB2d. Comfort Control CenterThe Comfort Control Center has been designed for you toeasily operate all the air conditioning and gas heating appliancesfound in your vehicle from one location.In order to familiarize yourself with the operation of theComfort Control Center, see Section B1d on page 16.Make sure that the power supply to the unitis disconnected before performing any workon the unit to avoid the possibility of shockinjury or damage to the equipment.Continuous Blower Operation1. Set the System Switch (3) to any position (including“OFF”).2. Move the FAN Auto/On Switch (2) to the ON position,the unit fan will operate continuously at the fan speedselected by the Fan Speed Switch (4).3. Select desired fan speed by moving the Fan SpeedSwitch (4) to:a. High Speed: Selected when maximum air flow isrequired. The discharge air will feel cool due to themaximum air flow. It is normally not used for heatpump operation.b. Low Speed: Normally selected for heat pump operation,because less air movement is needed forheat and discharge air is warmer.26
C1. MotorsRoof Top Units - To check the motor, turn the unit circuitbreaker to OFF. With an AC volt meter, verify that the circuithas no AC volts. On most units, the wires from themotor connect directly into a 6 or 9 pin connector. The motorleads are white (common), black (high), red (low) and yellow(medium). Some units are 2-speed. If you are checkinga 2 speed system, disregard the yellow wire. Set yourVOM to the ohms scale. You will perform a continuity test.Check for continuity between the white wire and each ofthe other wires.Lack of continuity between the white wire and any of theother wires indicates an open circuit and requires that themotor be changed. Next, check for continuity between eachwire and the green/yellow wire. If you get continuity, youhave a grounded motor and it must be replaced.On Models 620315 and 630215, the motor leads do not goFIG. C1Section C - ComponentsTo check the motor, turn the unit circuit breaker OFF. Withan AC voltmeter, verify that the circuit has no AC voltage.Next, locate the electric box and remove its cover. The motorleads will connect to a relay or a power module board andthe run capacitor. Disconnect the motor leads.Set your ohm meter to its highest scale for these tests.Check for continuity between the white wire and each ofthe other wire. Lack of continuity between the white wireand any of the other wires indicates an open circuit andrequires that the motor be changed. Next, scrape somepaint off the motor casing and check for continuity betweeneach wire and unit casing or the motor casing. If you getcontinuity between each wire and unit casing or the motorcasing. If you get continuity between any of the wires andthe motor casing, you have a grounded motor and it mustbe replaced.There are two types of motors used on these models.One is a single-speed motor and the other is a two-speedmotor (high and low). The single speed motor has threewires: White (common), Black (high) and Brown (capacitor).The two-speed has four wires: White (common), Black(high), Red (low) and Brown (capacitor).into a connector. On these units, disconnect the wires fromthe AC power module and do the previous tests betweenthe motor leads.Single Compressor UnitsThe units that have a single compressor are Models:39015.XXX39025.XXX39035.XXX39045.XXX39115.XXX39325.XXX39335.XXXDual Compressor UnitsThe units that have dual compressors are Models:39224.601 and 39424.601To check the motor, turn the unit circuit breaker or breakersOFF. With an AC volt meter, verify that the circuit hasno AC voltage. The wires from the motor connect to a 9-pinconnector. The motor leads are white (common - Terminal4), black (high - Terminal 6) and red (low - Terminal 7). Setyour ohm meter to its highest scale for these tests. Checkfor continuity between the white wire and each of the otherwires.FIG. C3FIG. C227
Page 1 and 2: AIR CONDITIONER & HEAT PUMPSERVICE
Page 3: A1. AC VoltageThe unit is a 115VAC,
Page 6: Section A - Installation, cont’d.
Page 9 and 10: A6a. Roof Top UnitsSection A - Inst
Page 11 and 12: A6b. Basement Unitswill have the
Page 13 and 14: A6b. Basement UnitsFREE AREA - is t
Page 15 and 16: Section A - Installation, cont’d.
Page 17 and 18: B1b. Bimetal Relay ControlsCooling
Page 19 and 20: B1d. Comfort Control CenterON/OFF S
Page 21 and 22: B1d. Comfort Control CenterHeat Pum
Page 23 and 24: B1d. Comfort Control CenterFIG. B11
Page 25 and 26: B2. Heat Pumpleaves the outside coi
Page 27: B2. Heat PumpFIG. B18 13Wait at lea
Page 31 and 32: Section C - Components, cont’d.Th
Page 33 and 34: Section C - Components, cont’d.C9
Page 35 and 36: Section C - Components, cont’d.Fo
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Page 41 and 42: Section C - Components, cont’d.RC
Page 43 and 44: Section C - Components, cont’d.FI
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Page 62 and 63: Section D - ConfigurationDucted Ins
Page 64 and 65: Section D - Configuration, cont’d
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Section D - Configuration, cont’d
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Section D - Configuration, cont’d
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Section E - Symptom/Cause ChartDUO-
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Section E - Symptom/Cause Chart, co
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10-19-00 Air Conditioner Heat Pump Service Manual - Bryant RV ...

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