Service Manual
Table Of Contents
- Important Safety Information
- I. Construction and Refrigeration Circuit Diagram
- II. Sequence of Operation and Service Diagnosis
- III. Controls and Adjustments
- IV. Refrigeration Circuit and Component Service Information
- V. Maintenance
- VI. Preparing the Appliance for Periods of Non-Use
- VII. Disposal
- VIII. Technical Information
- A. Electrical and Refrigerant Data
- B. Wiring Diagrams
- 1a. Refrigerator: Undercounter and Worktop Auxiliary Code C-5(D) and Earlier
- 1b. Refrigerator: Undercounter and Worktop Auxiliary Code C-5(E) and Later
- 2a. Refrigerator: Prep Table Auxiliary Code C-5(D) and Earlier
- 2b. Refrigerator: Prep Table Auxiliary Code C-5(E) and Later
- 3a. Freezer: All Auxiliary Code C-5(D) and Earlier
- 3b. Freezer: All Auxiliary Code C-5(E) and Later
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3. Freezer: All
4) Startup/Cool Down–Temperature above setpoint. CTh closed. Comp, ConFM,
EvapFM, PH, and MH energize. Diagnosis: Check that Comp, ConFM, EvapFM, PH,
and MH energize. If not, conrm that the appliance is not in a defrost cycle, 8-hr. DT is
operating properly, temperature is above setpoint, and CTh is closed. Check voltage on
8-hr. DT. In cooling, 115VAC is present on both DT terminal #1 (BK) and DT terminal
#4 (BK) to a neutral (W). If 115VAC is present on terminal #2 (R) to a neutral (W),
advance DT out of defrost cycle or replace DT. Check both terminals of CTh (BK) to a
neutral (W) for 115VAC. If 115VAC is present on one terminal and not the other, replace
CTh. If 115VAC is present on both terminals, check Comp, ConFM, and EvapFM. For
CRMF48(-01)(-W)(-W01) and CRMF60(-W), also see "HPS Activation (CRMF48(-01)
(-W)(-W01) and CRMF60(-W))" below.
Check voltage at Comp, external protector, and Comp terminals. Check Comp windings.
Check voltage on ConFM and EvapFM. Check ConFM and EvapFM windings. Check
fan blades for binding.
If Comp, ConFM, and EvapFM are energized and the cabinet temperature does not
cool down, check for a restriction in the refrigeration circuit, low refrigerant charge,
inefficient Comp, or defective TXV (CRMF48(-01)(-W)(-W01) auxiliary codes A-5 and
B-5).
HPS Activation (CRMF48(-01)(-W)(-W01) and CRMF60(-W)): Check continuity of
HPS. If open, allow time for system pressure to equalize and HPS to reset. If HPS
does not reset, replace HPS and diagnose reason for HPS activation. Conrm ConFM
is energized and fan blade turns freely. Check that the condenser coil is not clogged
or restricted. Check that there are no restrictions in the refrigeration circuit (drier, TXV
(auxiliary codes A-5 and B-5)).
Conrm that the appliance location meets factory requirements:
• This appliance is not intended for outdoor use. Normal operating ambient temperature
should be within 45°F to 100°F (7°C to 38°C).
• The appliance should not be located next to ovens, grills, or other high heat producing
equipment.
• A minimum of 1.5" (4 cm) overhead clearance should be provided for proper
ventilation.
5) Cool Down Achieved–Temperature cools to setpoint. CTh opens. Comp, ConFM,
EvapFM, PH, and MH de-energize. Diagnosis: If temperature has cooled to setpoint
and Comp, ConFM, EvapFM, PH, and MH do not de-energize, check CTh continuity. If
CTh defective, replace CTh.